diff --git a/banban-mini/src/pages/bind/index.scss b/banban-mini/src/pages/bind/index.scss
index 50b3718..007b012 100644
--- a/banban-mini/src/pages/bind/index.scss
+++ b/banban-mini/src/pages/bind/index.scss
@@ -6,67 +6,6 @@
   padding-bottom: calc(120px + env(safe-area-inset-bottom));
 }
 
-.loading {
-  display: flex;
-  align-items: center;
-  justify-content: center;
-  height: 400px;
-  font-size: 30px;
-  color: #999999;
-}
-
-.empty-tip {
-  display: flex;
-  flex-direction: column;
-  align-items: center;
-  justify-content: center;
-  height: 70%;
-  font-size: 30px;
-  color: #999999;
-  padding: 0 48px;
-
-  .empty-title {
-    font-size: 36px;
-    color: #1A1A1A;
-    font-weight: 600;
-    margin-bottom: 12px;
-  }
-
-  .empty-desc {
-    font-size: 26px;
-    color: #999999;
-    margin-bottom: 48px;
-  }
-
-  .empty-input-wrap {
-    width: 100%;
-    margin-bottom: 24px;
-
-    .empty-input {
-      background: #F5F7FA;
-      border-radius: 12px;
-      padding: 24px;
-      font-size: 30px;
-      width: 100%;
-      height: 96px;
-      box-sizing: border-box;
-      text-align: center;
-    }
-  }
-
-  .empty-btn {
-    background: #FF8C42;
-    border-radius: 12px;
-    padding: 24px 64px;
-
-    .empty-btn-text {
-      color: #FFFFFF;
-      font-size: 32px;
-      font-weight: 500;
-    }
-  }
-}
-
 .icon-bg {
   width: 72px;
   height: 72px;
@@ -214,6 +153,125 @@
   }
 }
 
+.bind-form {
+  margin: 0 48px 48px;
+}
+
+.form-card {
+  background: #FFFFFF;
+  border-radius: 20px;
+  padding: 28px 32px;
+  margin-bottom: 24px;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+}
+
+.form-title {
+  font-size: 30px;
+  font-weight: 700;
+  color: #1A1A1A;
+  display: block;
+  margin-bottom: 20px;
+}
+
+.field-item {
+  margin-bottom: 20px;
+
+  &:last-child {
+    margin-bottom: 0;
+  }
+}
+
+.field-label {
+  display: block;
+  font-size: 26px;
+  color: #666666;
+  margin-bottom: 12px;
+}
+
+.field-input {
+  width: 100%;
+  height: 88px;
+  background: #F7F8FA;
+  border-radius: 16px;
+  padding: 0 24px;
+  font-size: 28px;
+  color: #1A1A1A;
+  box-sizing: border-box;
+}
+
+.field-hint {
+  display: block;
+  font-size: 24px;
+  color: #999999;
+  line-height: 1.5;
+}
+
+.pending-tip {
+  margin-top: 20px;
+  padding: 20px 24px;
+  background: #FFF7E8;
+  border-radius: 16px;
+}
+
+.pending-tip-text {
+  font-size: 26px;
+  color: #D46B08;
+}
+
+.child-list {
+  display: flex;
+  flex-wrap: wrap;
+  margin-bottom: 20px;
+}
+
+.child-item {
+  padding: 14px 24px;
+  border-radius: 999px;
+  background: #F5F7FA;
+  margin-right: 16px;
+  margin-bottom: 16px;
+
+  &.selected {
+    background: #FF8C42;
+
+    .child-item-text {
+      color: #FFFFFF;
+    }
+  }
+}
+
+.child-item-text {
+  font-size: 26px;
+  color: #666666;
+}
+
+.submit-btn {
+  width: 100%;
+  height: 96px;
+  background: #FF8C42;
+  border-radius: 16px;
+  color: #FFFFFF;
+  font-size: 32px;
+  font-weight: 600;
+  border: none;
+
+  &::after {
+    display: none;
+  }
+}
+
+.loading {
+  min-height: 100%;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+
+  text {
+    font-size: 32px;
+    color: #999999;
+  }
+}
+
 .bind-tips {
   margin: 0 48px;
 
diff --git a/banban-mini/src/pages/bind/index.tsx b/banban-mini/src/pages/bind/index.tsx
index 3720e28..aaf8d6f 100644
--- a/banban-mini/src/pages/bind/index.tsx
+++ b/banban-mini/src/pages/bind/index.tsx
@@ -1,201 +1,233 @@
-import { View, Text, Image, Input } from '@tarojs/components'
-import { useState, useEffect } from 'react'
-import Taro from '@tarojs/taro'
-import { getToken } from '@/services/api'
-import { getCurrentBinding, directBind, setBindingChild } from '@/services/binding'
-import { getChildren, createChild } from '@/services/child'
+import { View, Text, Image, Input, Button } from '@tarojs/components'
+import { useState } from 'react'
+import Taro, { useDidShow } from '@tarojs/taro'
+import { getToken } from '@/services/auth'
+import { directBind, resolveActiveBinding, setBindingChild, setSelectedBindingDeviceId } from '@/services/binding'
+import { Child, createChild, getChildren } from '@/services/child'
 import './index.scss'
 
-interface Child {
-  child_id: number
-  child_name: string
+function parseBindingPayload(rawValue: string): { deviceId: string; serialNumber: string } {
+  const raw = String(rawValue || '').trim()
+  if (!raw) return { deviceId: '', serialNumber: '' }
+
+  try {
+    const parsed = JSON.parse(raw)
+    return {
+      deviceId: String(parsed?.device_id || parsed?.deviceId || '').trim(),
+      serialNumber: String(parsed?.serial_number || parsed?.serialNumber || '').trim(),
+    }
+  } catch (error) {
+    console.log('[bind] scan payload is not json:', error)
+  }
+
+  const queryPart = raw.includes('?') ? raw.slice(raw.indexOf('?') + 1) : raw
+  if (queryPart.includes('=')) {
+    const pairMap = queryPart.split('&').reduce<Record<string, string>>((result, item) => {
+      const [key, ...restValue] = item.split('=')
+      if (!key) return result
+      result[decodeURIComponent(key)] = decodeURIComponent(restValue.join('=') || '')
+      return result
+    }, {})
+    const deviceId = pairMap.device_id || pairMap.deviceId || ''
+    const serialNumber = pairMap.serial_number || pairMap.serialNumber || pairMap.sn || ''
+    if (deviceId || serialNumber) {
+      return {
+        deviceId: deviceId.trim(),
+        serialNumber: serialNumber.trim(),
+      }
+    }
+  }
+
+  const deviceIdMatch = raw.match(/device(?:_id|Id)?[:=]([A-Za-z0-9_-]+)/i)
+  const serialNumberMatch = raw.match(/serial(?:_number|Number)?[:=]([A-Za-z0-9_-]+)/i)
+  if (deviceIdMatch || serialNumberMatch) {
+    return {
+      deviceId: deviceIdMatch?.[1] || '',
+      serialNumber: serialNumberMatch?.[1] || '',
+    }
+  }
+
+  const parts = raw.split(/[\s,;|]+/).filter(Boolean)
+  if (parts.length >= 2) {
+    return {
+      deviceId: parts[0],
+      serialNumber: parts[1],
+    }
+  }
+
+  return {
+    deviceId: raw,
+    serialNumber: '',
+  }
 }
 
 export default function Bind() {
-  const [isScanning, setIsScanning] = useState(false)
   const [loading, setLoading] = useState(true)
+  const [submitting, setSubmitting] = useState(false)
+  const [isScanning, setIsScanning] = useState(false)
+  const [deviceId, setDeviceId] = useState('')
+  const [serialNumber, setSerialNumber] = useState('')
   const [children, setChildren] = useState<Child[]>([])
+  const [selectedChildId, setSelectedChildId] = useState<number | null>(null)
   const [newChildName, setNewChildName] = useState('')
-  const [saving, setSaving] = useState(false)
   const [pendingDeviceId, setPendingDeviceId] = useState<string | null>(null)
 
-  useEffect(() => {
-    checkAuth()
-  }, [])
+  useDidShow(() => {
+    void loadPageData()
+  })
 
   const goDevicePage = () => {
-    setTimeout(() => {
-      Taro.reLaunch({ url: '/pages/device/index' })
-    }, 500)
+    Taro.reLaunch({ url: '/pages/device/index' })
   }
 
-  const completeChildLink = async (deviceId: string, childId: number) => {
-    await setBindingChild(deviceId, { child_id: childId })
-    setPendingDeviceId(null)
-  }
-
-  const checkAuth = async () => {
-    const token = getToken()
-    if (!token) {
-      Taro.redirectTo({ url: '/pages/login/index' })
+  const loadPageData = async () => {
+    if (!getToken()) {
+      Taro.reLaunch({ url: '/pages/login/index' })
       return
     }
 
+    setLoading(true)
     try {
-      const childRes = await getChildren()
-      const currentChildren = childRes.items || []
+      const [childResponse, activeBinding] = await Promise.all([getChildren(), resolveActiveBinding()])
+      const currentChildren = childResponse.items || []
+
       setChildren(currentChildren)
+      setSelectedChildId((currentSelectedChildId) => currentSelectedChildId || currentChildren[0]?.child_id || null)
 
-      const binding = await getCurrentBinding()
-      if (binding) {
-        if (binding.child_id) {
-          Taro.showToast({ title: 'Already bound', icon: 'none' })
-          goDevicePage()
-          return
-        }
-
-        setPendingDeviceId(binding.device_id)
-        if (currentChildren.length > 0) {
-          await completeChildLink(binding.device_id, currentChildren[0].child_id)
-          Taro.showToast({ title: 'Binding completed', icon: 'success' })
-          goDevicePage()
-          return
-        }
+      if (activeBinding?.device_id && !activeBinding.child_id) {
+        setPendingDeviceId(activeBinding.device_id)
+        setDeviceId(activeBinding.device_id)
+      } else {
+        setPendingDeviceId(null)
+        setDeviceId('')
+        setSerialNumber('')
       }
-    } catch (err) {
-      console.error('Load bind page data failed:', err)
+    } catch (error: any) {
+      console.error('[bind] load failed:', error)
+      Taro.showToast({
+        title: error?.message || '加载失败，请稍后重试',
+        icon: 'none',
+      })
     } finally {
       setLoading(false)
     }
   }
 
-  const doBind = async (deviceId: string) => {
-    Taro.showLoading({ title: 'Binding...' })
+  const ensureChildId = async (): Promise<number | null> => {
+    if (selectedChildId) return selectedChildId
 
-    try {
-      await directBind({ device_id: deviceId })
+    const childName = newChildName.trim()
+    if (!childName) return null
 
-      if (children.length > 0) {
-        await completeChildLink(deviceId, children[0].child_id)
-        Taro.hideLoading()
-        Taro.showToast({
-          title: 'Bind success',
-          icon: 'success',
-          duration: 1200,
-        })
-        goDevicePage()
-        return
-      }
-
-      setPendingDeviceId(deviceId)
-      Taro.hideLoading()
-      Taro.showToast({ title: 'Device bound, add child next', icon: 'none' })
-    } catch (err: any) {
-      Taro.hideLoading()
-      Taro.showToast({ title: err.message || 'Bind failed', icon: 'none' })
-    }
+    const child = await createChild({ child_name: childName })
+    setChildren((currentChildren) => [child, ...currentChildren])
+    setSelectedChildId(child.child_id)
+    setNewChildName('')
+    return child.child_id
   }
 
   const handleScanCode = () => {
-    if (pendingDeviceId) {
-      Taro.showToast({ title: 'Complete child setup first', icon: 'none' })
-      return
-    }
-
     setIsScanning(true)
 
     Taro.scanCode({
       onlyFromCamera: true,
       scanType: ['qrCode', 'barCode'],
-      success: async (res) => {
+      success: (res) => {
         setIsScanning(false)
-        const deviceId = res.result
+        const parsed = parseBindingPayload(res.result || '')
+        if (parsed.deviceId) setDeviceId(parsed.deviceId)
+        if (parsed.serialNumber) setSerialNumber(parsed.serialNumber)
 
-        if (!deviceId) {
-          Taro.showToast({ title: 'Invalid device code', icon: 'none' })
-          return
-        }
-
-        await doBind(deviceId)
+        Taro.showToast({
+          title: parsed.serialNumber ? '已填入设备信息' : '已识别设备号，请补充序列号',
+          icon: 'none',
+        })
       },
       fail: (err) => {
         setIsScanning(false)
+
         if (err.errMsg && err.errMsg.includes('cancel')) {
           return
         }
-        Taro.showToast({ title: 'Scan failed', icon: 'none' })
+
+        Taro.showToast({
+          title: '扫码失败，请重试',
+          icon: 'none',
+        })
       },
     })
   }
 
-  const handleManualInput = () => {
-    if (pendingDeviceId) {
-      Taro.showToast({ title: 'Complete child setup first', icon: 'none' })
-      return
-    }
+  const handleSubmit = async () => {
+    if (submitting) return
 
-    Taro.showModal({
-      title: 'Manual input',
-      editable: true,
-      placeholderText: 'Enter device code',
-      success: (res) => {
-        if (res.confirm && res.content) {
-          doBind(res.content)
-        }
-      },
-    })
-  }
+    setSubmitting(true)
+    Taro.showLoading({ title: pendingDeviceId ? '关联中...' : '绑定中...' })
 
-  const handleAddChild = async () => {
-    if (!newChildName.trim()) {
-      Taro.showToast({ title: 'Please enter child name', icon: 'none' })
-      return
-    }
-
-    setSaving(true)
     try {
-      const child = await createChild({ child_name: newChildName.trim() })
-      setNewChildName('')
+      const childId = await ensureChildId()
 
       if (pendingDeviceId) {
-        await completeChildLink(pendingDeviceId, child.child_id)
-        Taro.showToast({ title: 'Child linked', icon: 'success' })
-        goDevicePage()
+        if (!childId) {
+          throw new Error('请选择儿童或填写新儿童昵称')
+        }
+
+        await setBindingChild(pendingDeviceId, { child_id: childId })
+        setSelectedBindingDeviceId(pendingDeviceId)
+        Taro.showToast({ title: '绑定完成', icon: 'success' })
+        setTimeout(() => {
+          goDevicePage()
+        }, 300)
         return
       }
 
-      const childRes = await getChildren()
-      setChildren(childRes.items || [])
-      Taro.showToast({ title: 'Child created', icon: 'success' })
-    } catch (err) {
-      Taro.showToast({ title: 'Create child failed', icon: 'none' })
-    } finally {
-      setSaving(false)
-    }
-  }
+      if (!deviceId.trim()) {
+        throw new Error('请输入设备号')
+      }
+      if (!serialNumber.trim()) {
+        throw new Error('请输入设备序列号')
+      }
 
-  const handleLogout = () => {
-    Taro.showModal({
-      title: 'Logout',
-      content: 'Clear login info and go to login page?',
-      confirmColor: '#FF8C42',
-      success: (res) => {
-        if (!res.confirm) return
-        Taro.removeStorageSync('token')
-        Taro.removeStorageSync('user_id')
-        Taro.removeStorageSync('expires_in')
-        Taro.removeStorageSync('userInfo')
-        Taro.removeStorageSync('hasDevice')
-        Taro.removeStorageSync('deviceInfo')
-        Taro.reLaunch({ url: '/pages/login/index' })
-      },
-    })
+      const result = await directBind({
+        device_id: deviceId.trim(),
+        serial_number: serialNumber.trim(),
+        ...(childId ? { child_id: childId } : {}),
+      })
+
+      setSelectedBindingDeviceId(result.device_id)
+
+      if (childId || result.child_id) {
+        Taro.showToast({ title: '设备绑定成功', icon: 'success' })
+        setTimeout(() => {
+          goDevicePage()
+        }, 300)
+        return
+      }
+
+      setPendingDeviceId(result.device_id)
+      setDeviceId(result.device_id)
+      Taro.showToast({
+        title: '设备已绑定，请继续关联儿童',
+        icon: 'none',
+      })
+    } catch (error: any) {
+      console.error('[bind] submit failed:', error)
+      Taro.showToast({
+        title: error?.message || '绑定失败，请重试',
+        icon: 'none',
+      })
+    } finally {
+      Taro.hideLoading()
+      setSubmitting(false)
+    }
   }
 
   if (loading) {
     return (
       <View className='bind-page'>
-        <View className='loading'>Loading...</View>
+        <View className='loading'>
+          <Text>加载中...</Text>
+        </View>
       </View>
     )
   }
@@ -203,8 +235,10 @@ export default function Bind() {
   return (
     <View className='bind-page'>
       <View className='bind-header'>
-        <Text className='title'>Bind Device</Text>
-        <Text className='subtitle'>Scan QR/device code to bind first, then set child profile.</Text>
+        <Text className='title'>{pendingDeviceId ? '补全绑定' : '绑定设备'}</Text>
+        <Text className='subtitle'>
+          {pendingDeviceId ? '设备已绑到当前账号，请补充儿童资料完成配置' : '扫描二维码或手动填写设备号和序列号'}
+        </Text>
       </View>
 
       <View className='scan-area'>
@@ -216,8 +250,8 @@ export default function Bind() {
               mode='aspectFit'
             />
           </View>
-          <Text className='scan-text'>{isScanning ? 'Scanning...' : 'Tap to scan'}</Text>
-          <Text className='scan-hint'>Place QR/barcode in frame</Text>
+          <Text className='scan-text'>{isScanning ? '正在扫码...' : '点击扫码'}</Text>
+          <Text className='scan-hint'>请将二维码放入框内</Text>
         </View>
 
         <View className='scan-corners'>
@@ -228,51 +262,95 @@ export default function Bind() {
         </View>
       </View>
 
-      <View className='bind-options'>
-        <View className='option-item' onClick={handleManualInput}>
-          <Text className='option-icon'>#</Text>
-          <Text className='option-text'>Manual device code input</Text>
-          <Text className='option-arrow'>{'>'}</Text>
-        </View>
-      </View>
+      <View className='bind-form'>
+        <View className='form-card'>
+          <Text className='form-title'>设备信息</Text>
 
-      {pendingDeviceId && (
-        <View className='empty-tip'>
-          <Text className='empty-title'>Device bound: {pendingDeviceId}</Text>
-          <Text className='empty-desc'>Add child profile to complete setup</Text>
-          <View className='empty-input-wrap'>
+          <View className='field-item'>
+            <Text className='field-label'>设备号</Text>
             <Input
-              className='empty-input'
-              placeholder='Enter child name'
-              value={newChildName}
-              onInput={(e) => setNewChildName(e.detail.value)}
+              className='field-input'
+              value={deviceId}
+              disabled={!!pendingDeviceId}
+              placeholder='请输入设备号'
+              onInput={(event) => setDeviceId(event.detail.value)}
             />
           </View>
-          <View className='empty-btn' onClick={handleAddChild}>
-            <Text className='empty-btn-text'>{saving ? 'Saving...' : 'Create and link child'}</Text>
+
+          <View className='field-item'>
+            <Text className='field-label'>设备序列号</Text>
+            <Input
+              className='field-input'
+              value={serialNumber}
+              disabled={!!pendingDeviceId}
+              placeholder='请输入设备序列号'
+              onInput={(event) => setSerialNumber(event.detail.value)}
+            />
           </View>
+
+          {pendingDeviceId && (
+            <View className='pending-tip'>
+              <Text className='pending-tip-text'>当前待完成设备：{pendingDeviceId}</Text>
+            </View>
+          )}
         </View>
-      )}
+
+        <View className='form-card'>
+          <Text className='form-title'>儿童信息</Text>
+
+          {children.length > 0 && (
+            <View className='child-list'>
+              {children.map((child) => (
+                <View
+                  key={child.child_id}
+                  className={`child-item ${selectedChildId === child.child_id ? 'selected' : ''}`}
+                  onClick={() => {
+                    setSelectedChildId((currentChildId) => (currentChildId === child.child_id ? null : child.child_id))
+                    setNewChildName('')
+                  }}
+                >
+                  <Text className='child-item-text'>{child.child_name}</Text>
+                </View>
+              ))}
+            </View>
+          )}
+
+          <View className='field-item'>
+            <Text className='field-label'>新建儿童昵称</Text>
+            <Input
+              className='field-input'
+              value={newChildName}
+              placeholder={children.length > 0 ? '不选已有儿童时，可填写新昵称' : '请输入儿童昵称'}
+              onInput={(event) => {
+                setNewChildName(event.detail.value)
+                if (event.detail.value) {
+                  setSelectedChildId(null)
+                }
+              }}
+            />
+          </View>
+
+          <Text className='field-hint'>优先选择已有儿童，也可以直接输入一个新昵称。</Text>
+        </View>
+
+        <Button className='submit-btn' loading={submitting} disabled={submitting} onClick={handleSubmit}>
+          {pendingDeviceId ? '完成儿童关联' : '绑定设备'}
+        </Button>
+      </View>
 
       <View className='bind-tips'>
-        <Text className='tips-title'>Binding Tips</Text>
+        <Text className='tips-title'>绑定帮助</Text>
         <View className='tip-item'>
           <Text className='tip-number'>1</Text>
-          <Text className='tip-text'>Find QR code or device code on device.</Text>
+          <Text className='tip-text'>先扫描二维码，自动填入设备号和序列号。</Text>
         </View>
         <View className='tip-item'>
           <Text className='tip-number'>2</Text>
-          <Text className='tip-text'>Bind device first by scan/manual input.</Text>
+          <Text className='tip-text'>如果二维码里只有设备号，请手动补充序列号。</Text>
         </View>
         <View className='tip-item'>
           <Text className='tip-number'>3</Text>
-          <Text className='tip-text'>Create or select child profile to finish setup.</Text>
-        </View>
-      </View>
-
-      <View className='bind-footer'>
-        <View className='logout-btn' onClick={handleLogout}>
-          <Text className='logout-btn-text'>Logout</Text>
+          <Text className='tip-text'>没有儿童资料时，可以直接在本页新建并完成绑定。</Text>
         </View>
       </View>
     </View>
diff --git a/banban-mini/src/pages/device/index.scss b/banban-mini/src/pages/device/index.scss
index 89dfc31..4cbf338 100644
--- a/banban-mini/src/pages/device/index.scss
+++ b/banban-mini/src/pages/device/index.scss
@@ -14,15 +14,8 @@
     font-weight: 700;
     color: #1A1A1A;
     display: block;
-    margin-bottom: 12px;
     line-height: 1.2;
   }
-
-  .page-subtitle {
-    font-size: 28px;
-    color: #666666;
-    line-height: 1.4;
-  }
 }
 
 .status-card {
@@ -289,3 +282,99 @@
     color: #999999;
   }
 }
+
+.detail-card {
+  background: #FFFFFF;
+  border-radius: 20px;
+  margin: 0 24px 24px;
+  padding: 10px 24px;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+}
+
+.detail-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 20px 0;
+  border-bottom: 1px solid #F3F3F3;
+
+  &:last-child {
+    border-bottom: none;
+  }
+}
+
+.detail-label {
+  font-size: 28px;
+  color: #666666;
+}
+
+.detail-value {
+  max-width: 60%;
+  font-size: 28px;
+  color: #1A1A1A;
+  text-align: right;
+  word-break: break-all;
+}
+
+.empty-card {
+  background: #FFFFFF;
+  border-radius: 24px;
+  margin: 0 24px;
+  padding: 48px 32px;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+  text-align: center;
+}
+
+.empty-robot {
+  width: 132px;
+  height: 132px;
+  background: #FEF3E8;
+  border-radius: 50%;
+  margin: 0 auto 24px;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+
+  .robot-img {
+    width: 68px;
+    height: 68px;
+  }
+}
+
+.empty-title {
+  display: block;
+  font-size: 34px;
+  font-weight: 700;
+  color: #1A1A1A;
+}
+
+.empty-btn {
+  margin-top: 28px;
+  height: 92px;
+  border-radius: 16px;
+  background: #FF8C42;
+  display: flex;
+  align-items: center;
+  justify-content: center;
+}
+
+.empty-btn-text {
+  font-size: 30px;
+  color: #FFFFFF;
+  font-weight: 600;
+}
+
+.helper-card {
+  background: #FFFFFF;
+  border-radius: 20px;
+  margin: 0 24px 24px;
+  padding: 28px 24px;
+  box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+}
+
+.helper-title {
+  display: block;
+  font-size: 30px;
+  font-weight: 600;
+  color: #1A1A1A;
+}
diff --git a/banban-mini/src/pages/device/index.tsx b/banban-mini/src/pages/device/index.tsx
index e4bff30..492c70c 100644
--- a/banban-mini/src/pages/device/index.tsx
+++ b/banban-mini/src/pages/device/index.tsx
@@ -1,104 +1,65 @@
 import { View, Text, Switch, Slider, Image } from '@tarojs/components'
-import { useState, useEffect } from 'react'
-import Taro from '@tarojs/taro'
-import { getCurrentBinding } from '@/services/binding'
+import { useState } from 'react'
+import Taro, { useDidShow } from '@tarojs/taro'
+import { getToken } from '@/services/auth'
+import { Binding, resolveActiveBinding } from '@/services/binding'
+import { Child, getChild } from '@/services/child'
 import './index.scss'
 
-interface DeviceData {
-  id: string
-  name: string
-  status: 'online' | 'offline'
-  battery: number
-  daysLeft: number
-  sleepEnabled: boolean
-  sleepTime: string
-  volume: number
-}
-
 export default function Device() {
-  const [device, setDevice] = useState<DeviceData | null>(null)
+  const [binding, setBinding] = useState<Binding | null>(null)
+  const [child, setChild] = useState<Child | null>(null)
   const [isLoading, setIsLoading] = useState(true)
-  const [hasDevice, setHasDevice] = useState(false)
+  const [sleepEnabled, setSleepEnabled] = useState(true)
+  const [volume, setVolume] = useState(50)
 
-  useEffect(() => {
-    console.log('[Device] Checking login status...')
-    const token = Taro.getStorageSync('token')
-    console.log('[Device] Token exists:', !!token)
-    
-    if (!token) {
-      console.log('[Device] No token, redirecting to login')
-      Taro.redirectTo({ url: '/pages/login/index' })
+  useDidShow(() => {
+    void loadDeviceInfo()
+  })
+
+  const loadDeviceInfo = async () => {
+    if (!getToken()) {
+      Taro.reLaunch({ url: '/pages/login/index' })
       return
     }
 
-    loadDeviceInfo()
-  }, [])
-
-  const loadDeviceInfo = async () => {
+    setIsLoading(true)
     try {
-      const binding = await getCurrentBinding()
-      console.log('[Device] Got binding:', binding)
-      
-      if (binding) {
-        if (!binding.child_id) {
-          setHasDevice(false)
-          Taro.showToast({ title: 'Please link child profile first', icon: 'none' })
-          setTimeout(() => {
-            Taro.redirectTo({ url: '/pages/bind/index' })
-          }, 600)
-          return
-        }
+      const activeBinding = await resolveActiveBinding()
+      setBinding(activeBinding)
 
-        setHasDevice(true)
-        Taro.setStorageSync('hasDevice', '1')
-        Taro.setStorageSync('deviceInfo', {
-          id: binding.device_id,
-          name: '伴伴设备',
-          status: 'online',
-          battery: 82
-        })
-        setDevice({
-          id: binding.device_id,
-          name: '伴伴设备',
-          status: 'online',
-          battery: 82,
-          daysLeft: 4,
-          sleepEnabled: true,
-          sleepTime: '每天 22:00 - 07:00',
-          volume: 50
-        })
+      if (activeBinding?.child_id) {
+        try {
+          const currentChild = await getChild(activeBinding.child_id)
+          setChild(currentChild)
+        } catch (error) {
+          console.error('[device] load child failed:', error)
+          setChild(null)
+        }
       } else {
-        setHasDevice(false)
-        Taro.removeStorageSync('hasDevice')
-        Taro.removeStorageSync('deviceInfo')
-      }
-    } catch (err: any) {
-      console.log('[Device] No binding or error:', err?.message || err)
-      if (err?.status === 404) {
-        setHasDevice(false)
-        Taro.removeStorageSync('hasDevice')
-        Taro.removeStorageSync('deviceInfo')
+        setChild(null)
       }
+    } catch (error: any) {
+      console.error('[device] load failed:', error)
+      Taro.showToast({
+        title: error?.message || '加载失败，请稍后重试',
+        icon: 'none',
+      })
+    } finally {
+      setIsLoading(false)
     }
-    setIsLoading(false)
   }
 
   const handleSleepToggle = (e: any) => {
-    if (!device) return
-    setDevice({ ...device, sleepEnabled: e.detail.value })
+    setSleepEnabled(e.detail.value)
     Taro.showToast({
-      title: e.detail.value ? '已开启定时休眠' : '已关闭定时休眠',
-      icon: 'success'
+      title: e.detail.value ? '休眠展示已开启' : '休眠展示已关闭',
+      icon: 'none',
     })
   }
 
   const handleVolumeChange = (e: any) => {
-    if (!device) return
-    setDevice({ ...device, volume: e.detail.value })
-  }
-
-  const switchTab = (url: string) => {
-    Taro.switchTab({ url })
+    setVolume(e.detail.value)
   }
 
   if (isLoading) {
@@ -111,27 +72,48 @@ export default function Device() {
     )
   }
 
-  // 未绑定设备，跳转到绑定页面
-  if (!hasDevice || !device) {
-    Taro.redirectTo({ url: '/pages/bind/index' })
-    return null
+  if (!binding) {
+    return (
+      <View className='device-page'>
+        <View className='page-header'>
+          <Text className='page-title'>设备首页</Text>
+        </View>
+
+        <View className='empty-card'>
+          <View className='empty-robot'>
+            <Image className='robot-img' src={require('../../assets/tab-icons/robot.png')} mode='aspectFit' />
+          </View>
+          <Text className='empty-title'>先绑定一台伴伴设备</Text>
+          <View className='empty-btn' onClick={() => Taro.navigateTo({ url: '/pages/bind/index' })}>
+            <Text className='empty-btn-text'>去绑定设备</Text>
+          </View>
+        </View>
+      </View>
+    )
   }
 
+  const childName = child?.child_name || '未设置'
+  const pageTitle = child?.child_name ? `${child.child_name} 的伴伴` : '伴伴设备'
+  const battery = 82
+  const daysLeft = 4
+
   return (
     <View className='device-page'>
       <View className='page-header'>
-        <Text className='page-title'>{device.name}</Text>
-        <Text className='page-subtitle'>设备运行状态良好</Text>
+        <Text className='page-title'>{pageTitle}</Text>
       </View>
 
       <View className='status-card'>
         <View className='status-badge'>
           <View className='status-dot'></View>
-          <Text className='status-text'>4G 在线</Text>
+          <Text className='status-text'>{binding.child_id ? '已完成绑定' : '待关联儿童'}</Text>
         </View>
         <View className='battery-section'>
-          <Text className='battery-percent'>{device.battery}<Text className='percent'>%</Text></Text>
-          <Text className='battery-label'>剩余电量 (预计续航 {device.daysLeft} 天)</Text>
+          <Text className='battery-percent'>
+            {battery}
+            <Text className='percent'>%</Text>
+          </Text>
+          <Text className='battery-label'>模拟电量展示 (预计续航 {daysLeft} 天)</Text>
         </View>
         <View className='device-avatar'>
           <View className='robot-icon'>
@@ -140,6 +122,21 @@ export default function Device() {
         </View>
       </View>
 
+      <View className='detail-card'>
+        <View className='detail-row'>
+          <Text className='detail-label'>设备号</Text>
+          <Text className='detail-value'>{binding.device_id}</Text>
+        </View>
+        <View className='detail-row'>
+          <Text className='detail-label'>儿童昵称</Text>
+          <Text className='detail-value'>{childName}</Text>
+        </View>
+        <View className='detail-row'>
+          <Text className='detail-label'>绑定时间</Text>
+          <Text className='detail-value'>{binding.bound_at || '--'}</Text>
+        </View>
+      </View>
+
       <View className='section-title'>基础控制</View>
       <View className='control-card'>
         <View className='control-item'>
@@ -153,14 +150,10 @@ export default function Device() {
             </View>
             <View className='control-info'>
               <Text className='control-name'>定时休眠</Text>
-              <Text className='control-detail'>{device.sleepTime}</Text>
+              <Text className='control-detail'>开启后进入休眠展示</Text>
             </View>
           </View>
-          <Switch
-            checked={device.sleepEnabled}
-            onChange={handleSleepToggle}
-            color='#FF8C42'
-          />
+          <Switch checked={sleepEnabled} onChange={handleSleepToggle} color='#FF8C42' />
         </View>
 
         <View className='divider'></View>
@@ -188,7 +181,7 @@ export default function Device() {
               className='slider'
               min={0}
               max={100}
-              value={device.volume}
+              value={volume}
               onChange={handleVolumeChange}
               activeColor='#FF8C42'
               backgroundColor='#E5E5E5'
@@ -203,6 +196,11 @@ export default function Device() {
         </View>
       </View>
 
+      {!binding.child_id && (
+        <View className='helper-card' onClick={() => Taro.navigateTo({ url: '/pages/bind/index' })}>
+          <Text className='helper-title'>继续完成儿童关联</Text>
+        </View>
+      )}
     </View>
   )
 }
diff --git a/banban-mini/src/pages/sleep/index.scss b/banban-mini/src/pages/sleep/index.scss
index 9bba1ba..b9d7829 100644
--- a/banban-mini/src/pages/sleep/index.scss
+++ b/banban-mini/src/pages/sleep/index.scss
@@ -161,149 +161,198 @@
   }
 }
 
-.add-input-box {
+.image-avatar {
+  width: 100%;
+  height: 100%;
+  border-radius: 24px;
+}
+
+.summary-card {
   background: #FFFFFF;
   border-radius: 20px;
   margin: 0 24px 24px;
-  padding: 24px;
+  padding: 10px 24px;
   box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+}
 
-  .input-row {
-    display: flex;
-    flex-direction: column;
-    gap: 16px;
+.summary-row {
+  display: flex;
+  justify-content: space-between;
+  align-items: center;
+  padding: 20px 0;
+  border-bottom: 1px solid #F2F2F2;
+
+  &:last-child {
+    border-bottom: none;
   }
+}
 
-  .input-wrapper {
-    .name-input {
-      background: #F5F7FA;
-      border-radius: 12px;
-      padding: 20px 24px;
-      font-size: 30px;
-      width: 100%;
-      box-sizing: border-box;
-    }
+.summary-label {
+  font-size: 28px;
+  color: #666666;
+}
 
-    .input-hint {
-      font-size: 24px;
-      color: #999999;
-      margin-top: 12px;
-      display: block;
-    }
-  }
-
-  .input-btns {
-    display: flex;
-    justify-content: flex-end;
-    gap: 24px;
-
-    .confirm-btn {
-      font-size: 30px;
-      color: #FF8C42;
-      font-weight: 500;
-    }
-
-    .cancel-btn {
-      font-size: 30px;
-      color: #999999;
-    }
-  }
+.summary-value {
+  max-width: 60%;
+  font-size: 28px;
+  color: #1A1A1A;
+  text-align: right;
+  word-break: break-all;
 }
 
 .menu-item.disabled {
-  opacity: 0.5;
-
-  &:active {
-    background: transparent;
-  }
+  opacity: 0.45;
 }
 
 .logout-section {
-  margin: 24px;
+  margin: 0 24px;
 }
 
 .logout-btn {
+  height: 92px;
+  border-radius: 18px;
   background: #FFFFFF;
-  border-radius: 20px;
-  padding: 26px 24px;
-  text-align: center;
+  display: flex;
+  align-items: center;
+  justify-content: center;
   box-shadow: 0 2px 12px rgba(0, 0, 0, 0.04);
+}
 
-  .logout-text {
-    font-size: 30px;
-    color: #FF3B30;
-    font-weight: 500;
-  }
+.logout-text {
+  font-size: 30px;
+  color: #FF6B35;
+  font-weight: 600;
 }
 
 .modal-mask {
   position: fixed;
-  top: 0;
-  left: 0;
-  right: 0;
-  bottom: 0;
-  background: rgba(0, 0, 0, 0.5);
+  inset: 0;
+  background: rgba(0, 0, 0, 0.42);
   display: flex;
   align-items: center;
   justify-content: center;
-  z-index: 1000;
+  padding: 0 48px;
+  z-index: 20;
 }
 
-.modal-content {
+.modal-card {
+  width: 100%;
   background: #FFFFFF;
-  border-radius: 20px;
-  width: 600px;
-  margin: 0 48px;
-  overflow: hidden;
+  border-radius: 24px;
+  padding: 32px;
+  box-sizing: border-box;
 }
 
-.modal-header {
-  padding: 32px 32px 16px;
-  text-align: center;
+.modal-title {
+  display: block;
+  font-size: 32px;
+  font-weight: 700;
+  color: #1A1A1A;
+  margin-bottom: 24px;
+}
 
-  .modal-title {
-    font-size: 34px;
+.modal-input-wrap {
+  background: #F7F8FA;
+  border-radius: 16px;
+  padding: 0 24px;
+}
+
+.modal-input {
+  height: 88px;
+  width: 100%;
+  font-size: 28px;
+  color: #1A1A1A;
+}
+
+.modal-actions {
+  display: flex;
+  justify-content: flex-end;
+  margin-top: 28px;
+}
+
+.modal-action {
+  font-size: 30px;
+  margin-left: 32px;
+
+  &.cancel {
+    color: #999999;
+  }
+
+  &.confirm {
+    color: #FF8C42;
     font-weight: 600;
-    color: #1A1A1A;
   }
 }
 
-.modal-body {
-  padding: 16px 32px 32px;
+.device-switch-card {
+  max-height: 70vh;
+}
+
+.device-switch-empty {
+  display: block;
+  font-size: 28px;
+  color: #999999;
+  line-height: 1.6;
+}
+
+.device-switch-list {
+  max-height: 52vh;
+  overflow-y: auto;
+}
+
+.device-switch-item {
+  padding: 24px;
+  border-radius: 18px;
+  background: #F7F8FA;
+  margin-bottom: 16px;
+
+  &:last-child {
+    margin-bottom: 0;
+  }
+
+  &.active {
+    background: #FFF2E7;
+    border: 2px solid #FFBE94;
+  }
+}
+
+.device-switch-head {
   display: flex;
   align-items: center;
-
-  .modal-input {
-    background: #F5F7FA;
-    border-radius: 12px;
-    padding: 0 24px;
-    font-size: 34px;
-    width: 100%;
-    height: 96px;
-    box-sizing: border-box;
-    display: flex;
-    align-items: center;
-  }
+  justify-content: space-between;
+  margin-bottom: 10px;
 }
 
-.modal-footer {
+.device-switch-id {
+  font-size: 28px;
+  color: #1A1A1A;
+  font-weight: 600;
+  word-break: break-all;
+}
+
+.device-switch-tag {
+  margin-left: 16px;
+  padding: 6px 14px;
+  border-radius: 999px;
+  background: #FF8C42;
+  font-size: 22px;
+  color: #FFFFFF;
+  flex-shrink: 0;
+}
+
+.device-switch-name {
+  font-size: 26px;
+  color: #666666;
+}
+
+.loading {
+  min-height: 100%;
   display: flex;
-  border-top: 1px solid #F0F0F0;
+  align-items: center;
+  justify-content: center;
 
-  .modal-btn {
-    flex: 1;
-    text-align: center;
-    padding: 24px 0;
+  text {
     font-size: 32px;
-
-    &.cancel {
-      color: #666666;
-      border-right: 1px solid #F0F0F0;
-    }
-
-    &.confirm {
-      color: #FF8C42;
-      font-weight: 500;
-    }
+    color: #999999;
   }
 }
diff --git a/banban-mini/src/pages/sleep/index.tsx b/banban-mini/src/pages/sleep/index.tsx
index e93c8f3..a788c25 100644
--- a/banban-mini/src/pages/sleep/index.tsx
+++ b/banban-mini/src/pages/sleep/index.tsx
@@ -1,210 +1,270 @@
 import { View, Text, Image, Input } from '@tarojs/components'
-import { useState, useEffect } from 'react'
-import Taro from '@tarojs/taro'
-import { getToken, getCurrentUserId } from '@/services/api'
-import { getChildren, createChild, updateChild } from '@/services/child'
-import { getCurrentBinding, unbindDevice } from '@/services/binding'
+import { useState } from 'react'
+import Taro, { useDidShow } from '@tarojs/taro'
+import { clearToken, getCurrentUserId, getToken } from '@/services/auth'
+import {
+  BindingListItem,
+  clearSelectedBindingDeviceId,
+  getBindings,
+  resolveBindingSelection,
+  setBindingChild,
+  setSelectedBindingDeviceId,
+  unbindDevice,
+} from '@/services/binding'
+import { Child, createChild, getChildren, updateChild } from '@/services/child'
 import './index.scss'
 
-interface Child {
-  child_id: number
-  child_name: string
-  child_gender: number
-  status: number
-}
-
-interface Binding {
-  device_id: string
-  child_id: number | null
-  status: number
-}
-
 interface MenuItem {
   icon: string
   iconBgClass: string
   name: string
-  value?: string
+  value: string
   arrow?: boolean
   disabled?: boolean
 }
 
 export default function Sleep() {
-  const [children, setChildren] = useState<Child[]>([])
-  const [binding, setBinding] = useState<Binding | null>(null)
   const [loading, setLoading] = useState(true)
+  const [children, setChildren] = useState<Child[]>([])
+  const [bindings, setBindings] = useState<BindingListItem[]>([])
+  const [binding, setBinding] = useState<BindingListItem | null>(null)
   const [showModal, setShowModal] = useState(false)
+  const [showDeviceModal, setShowDeviceModal] = useState(false)
   const [modalType, setModalType] = useState<'add' | 'edit'>('add')
   const [childName, setChildName] = useState('')
   const [editingChildId, setEditingChildId] = useState<number | null>(null)
   const [parentInfo, setParentInfo] = useState<{ nickname?: string; avatar_url?: string }>({})
 
-  const token = getToken()
-  const userId = getCurrentUserId()
+  useDidShow(() => {
+    void loadData()
+  })
 
-  useEffect(() => {
-    if (!token) {
+  const loadData = async () => {
+    if (!getToken()) {
       Taro.reLaunch({ url: '/pages/login/index' })
       return
     }
-    loadData()
-  }, [])
 
-  const loadData = async () => {
+    setLoading(true)
     try {
-      setLoading(true)
-      
-      // Get parent info
-      const userInfo = Taro.getStorageSync('userInfo') || {}
-      setParentInfo(userInfo)
-      
-      // Get children
-      const childRes = await getChildren()
-      setChildren(childRes.items || [])
+      const [childResponse, bindingResponse] = await Promise.all([getChildren(), getBindings(undefined, 100)])
+      const bindingItems = bindingResponse.items || []
+      const activeBinding = resolveBindingSelection(bindingItems)
 
-      // Get binding
-      try {
-        const bindRes = await getCurrentBinding()
-        setBinding(bindRes)
-      } catch (err: any) {
-        if (err.status === 404) {
-          setBinding(null)
-        }
-      }
-    } catch (err) {
-      console.error('Load failed:', err)
+      setChildren(childResponse.items || [])
+      setBindings(bindingItems)
+      setBinding(activeBinding)
+      setParentInfo(Taro.getStorageSync('userInfo') || {})
+    } catch (error: any) {
+      console.error('[manage] load failed:', error)
+      Taro.showToast({
+        title: error?.message || '加载失败，请稍后重试',
+        icon: 'none',
+      })
     } finally {
       setLoading(false)
     }
   }
 
+  const currentChild = binding?.child_id ? children.find((item) => item.child_id === binding.child_id) || null : null
+  const currentChildName = currentChild?.child_name || binding?.child_name || (binding && !binding.child_id ? '待关联' : '未设置')
+
   const handleOpenModal = (type: 'add' | 'edit', child?: Child) => {
     setModalType(type)
-    if (type === 'edit' && child) {
-      setChildName(child.child_name)
-      setEditingChildId(child.child_id)
-    } else {
-      setChildName('')
-      setEditingChildId(null)
-    }
+    setChildName(child?.child_name || '')
+    setEditingChildId(child?.child_id || null)
     setShowModal(true)
   }
 
-  const handleModalConfirm = async () => {
-    if (!childName.trim()) {
-      Taro.showToast({ title: '请输入昵称', icon: 'none' })
-      return
-    }
-
-    try {
-      if (modalType === 'add') {
-        await createChild({ child_name: childName.trim() })
-        Taro.showToast({ title: '添加成功', icon: 'success' })
-      } else if (editingChildId) {
-        await updateChild(editingChildId, { child_name: childName.trim() })
-        Taro.showToast({ title: '修改成功', icon: 'success' })
-      }
-      setShowModal(false)
-      setChildName('')
-      setEditingChildId(null)
-      loadData()
-    } catch (err) {
-      Taro.showToast({ title: '操作失败', icon: 'none' })
-    }
-  }
-
-  const handleModalCancel = () => {
+  const handleCloseModal = () => {
     setShowModal(false)
     setChildName('')
     setEditingChildId(null)
   }
 
-  const handleUnbind = () => {
-    if (!binding) return
-    Taro.showModal({
-      title: '解除设备绑定',
-      content: '确定要解除当前设备的绑定吗？',
-      confirmColor: '#FF8C42',
-      success: async (res) => {
-        if (res.confirm) {
-          try {
-            await unbindDevice(binding.device_id)
-            Taro.showToast({ title: '已解绑', icon: 'success' })
-            setBinding(null)
-            loadData()
-          } catch (err) {
-            Taro.showToast({ title: '解绑失败', icon: 'none' })
-          }
-        }
-      }
+  const handleSelectBinding = (targetBinding: BindingListItem) => {
+    setSelectedBindingDeviceId(targetBinding.device_id)
+    setBinding(targetBinding)
+    setShowDeviceModal(false)
+    Taro.showToast({
+      title: '已切换设备',
+      icon: 'success',
     })
   }
 
-  const handleLogout = async () => {
+  const handleSubmitModal = async () => {
+    const normalizedName = childName.trim()
+    if (!normalizedName) {
+      Taro.showToast({ title: '请输入儿童昵称', icon: 'none' })
+      return
+    }
+
+    try {
+      if (modalType === 'add') {
+        const createdChild = await createChild({ child_name: normalizedName })
+        if (binding && !binding.child_id) {
+          await setBindingChild(binding.device_id, { child_id: createdChild.child_id })
+          Taro.showToast({ title: '已创建并关联', icon: 'success' })
+        } else {
+          Taro.showToast({ title: '创建成功', icon: 'success' })
+        }
+      } else if (editingChildId) {
+        await updateChild(editingChildId, { child_name: normalizedName })
+        Taro.showToast({ title: '修改成功', icon: 'success' })
+      }
+
+      handleCloseModal()
+      await loadData()
+    } catch (error: any) {
+      console.error('[manage] save child failed:', error)
+      Taro.showToast({
+        title: error?.message || '保存失败，请重试',
+        icon: 'none',
+      })
+    }
+  }
+
+  const handleChildMenu = () => {
+    if (binding && !binding.child_id && children.length > 0) {
+      Taro.showActionSheet({
+        itemList: [...children.map((item) => item.child_name), '新建儿童资料'],
+        success: async (result) => {
+          if (result.tapIndex === children.length) {
+            handleOpenModal('add')
+            return
+          }
+
+          const targetChild = children[result.tapIndex]
+          if (!targetChild) return
+
+          try {
+            await setBindingChild(binding.device_id, { child_id: targetChild.child_id })
+            Taro.showToast({ title: '关联成功', icon: 'success' })
+            await loadData()
+          } catch (error: any) {
+            Taro.showToast({
+              title: error?.message || '关联失败，请重试',
+              icon: 'none',
+            })
+          }
+        },
+      })
+      return
+    }
+
+    if (currentChild) {
+      handleOpenModal('edit', currentChild)
+      return
+    }
+
+    handleOpenModal('add')
+  }
+
+  const handleUnbind = () => {
+    if (!binding) return
+
+    Taro.showModal({
+      title: '解除设备绑定',
+      content: '确定要解除当前设备绑定吗？',
+      confirmColor: '#FF8C42',
+      success: async (result) => {
+        if (!result.confirm) return
+
+        try {
+          await unbindDevice(binding.device_id)
+          Taro.showToast({ title: '已解绑', icon: 'success' })
+          await loadData()
+        } catch (error: any) {
+          Taro.showToast({
+            title: error?.message || '解绑失败，请重试',
+            icon: 'none',
+          })
+        }
+      },
+    })
+  }
+
+  const handleLogout = () => {
     Taro.showModal({
       title: '退出登录',
-      content: '确定要退出登录吗？',
+      content: '确定要退出当前账号吗？',
       confirmColor: '#FF8C42',
-      success: (res) => {
-        if (res.confirm) {
-          Taro.removeStorageSync('token')
-          Taro.removeStorageSync('user_id')
-          Taro.removeStorageSync('userInfo')
-          Taro.reLaunch({ url: '/pages/login/index' })
-        }
-      }
+      success: (result) => {
+        if (!result.confirm) return
+        clearToken()
+        clearSelectedBindingDeviceId()
+        Taro.removeStorageSync('userInfo')
+        Taro.reLaunch({ url: '/pages/login/index' })
+      },
     })
   }
 
   const handleMenuClick = (item: MenuItem) => {
     if (item.disabled) return
-    
+
+    if (item.name === '儿童资料 (用于称呼)') {
+      handleChildMenu()
+      return
+    }
+
     if (item.name === '绑定新设备') {
-      if (binding) {
-        Taro.showToast({ title: '已有设备绑定', icon: 'none' })
-      } else {
-        Taro.navigateTo({ url: '/pages/bind/index' })
-      }
-    } else if (item.name === '解除设备绑定') {
+      Taro.navigateTo({ url: '/pages/bind/index' })
+      return
+    }
+
+    if (item.name === '切换设备') {
+      setShowDeviceModal(true)
+      return
+    }
+
+    if (item.name === '解除设备绑定') {
       handleUnbind()
-    } else if (item.name.includes('儿童资料')) {
-      if (children.length > 0) {
-        handleOpenModal('edit', children[0])
-      } else {
-        handleOpenModal('add')
-      }
     }
   }
 
-  if (!token) return null
+  if (loading) {
+    return (
+      <View className='manage-page'>
+        <View className='loading'>
+          <Text>加载中...</Text>
+        </View>
+      </View>
+    )
+  }
 
+  const userId = getCurrentUserId()
   const menuItems: MenuItem[] = [
     {
       icon: require('../../assets/tab-icons/orange-robot.png'),
       iconBgClass: 'orange',
       name: '儿童资料 (用于称呼)',
-      value: children.length > 0 ? children[0].child_name : '未设置',
-      arrow: true
+      value: currentChildName,
+      arrow: true,
     },
     {
       icon: require('../../assets/tab-icons/rings.png'),
       iconBgClass: 'green',
+      name: '切换设备',
+      value: bindings.length > 0 ? `共 ${bindings.length} 台` : '暂无设备',
+      arrow: true,
+    },
+    {
+      icon: require('../../assets/tab-icons/orange-robot.png'),
+      iconBgClass: 'orange',
       name: '绑定新设备',
       value: '',
-      arrow: true
+      arrow: true,
     },
     {
       icon: require('../../assets/tab-icons/broken-rings.png'),
       iconBgClass: 'red',
       name: '解除设备绑定',
-      value: '',
+      value: binding?.device_id ? `当前: ${binding.device_id}` : '',
       arrow: true,
-      disabled: !binding
-    }
+      disabled: !binding,
+    },
   ]
 
-  const firstChild = children[0]
-  const childDisplayValue = firstChild ? firstChild.child_name : ''
-
   return (
     <View className='manage-page'>
       <View className='page-header'>
@@ -214,24 +274,39 @@ export default function Sleep() {
       <View className='user-card'>
         <View className='user-avatar'>
           {parentInfo.avatar_url ? (
-            <Image className='avatar-img' src={parentInfo.avatar_url} mode='aspectFill' />
+            <Image className='avatar-img image-avatar' src={parentInfo.avatar_url} mode='aspectFill' />
           ) : (
             <Text className='avatar-img'>👤</Text>
           )}
         </View>
         <View className='user-info'>
           <Text className='user-name'>{parentInfo.nickname || '家长用户'}</Text>
-          <Text className='user-role'>ID: {userId}</Text>
+          <Text className='user-role'>用户 ID: {userId || '--'}</Text>
+        </View>
+        <View className='verified-badge'>
+          <Text>{bindings.length > 0 ? `已绑定 ${bindings.length} 台` : '未绑定设备'}</Text>
+        </View>
+      </View>
+
+      <View className='summary-card'>
+        <View className='summary-row'>
+          <Text className='summary-label'>已绑定设备数</Text>
+          <Text className='summary-value'>{bindings.length} 台</Text>
+        </View>
+        <View className='summary-row'>
+          <Text className='summary-label'>当前设备</Text>
+          <Text className='summary-value'>{binding?.device_id || '未绑定'}</Text>
+        </View>
+        <View className='summary-row'>
+          <Text className='summary-label'>当前儿童</Text>
+          <Text className='summary-value'>{currentChildName}</Text>
         </View>
       </View>
 
       <View className='menu-card'>
         {menuItems.map((item, index) => (
           <View key={index}>
-            <View 
-              className={`menu-item ${item.disabled ? 'disabled' : ''}`} 
-              onClick={() => handleMenuClick(item)}
-            >
+            <View className={`menu-item ${item.disabled ? 'disabled' : ''}`} onClick={() => handleMenuClick(item)}>
               <View className='menu-left'>
                 <View className={`icon-bg ${item.iconBgClass}`}>
                   <Image className='control-icon-img' src={item.icon} mode='aspectFit' />
@@ -239,9 +314,7 @@ export default function Sleep() {
                 <Text className='menu-name'>{item.name}</Text>
               </View>
               <View className='menu-right'>
-                {item.name.includes('儿童资料') && (
-                  <Text className='menu-value'>{childDisplayValue}</Text>
-                )}
+                {item.value && <Text className='menu-value'>{item.value}</Text>}
                 {item.arrow && <Text className='arrow'>›</Text>}
               </View>
             </View>
@@ -260,25 +333,66 @@ export default function Sleep() {
         <Text className='version-text'>伴伴 Companion V1.1.0</Text>
       </View>
 
-      {/* Modal */}
+      {showDeviceModal && (
+        <View className='modal-mask' onClick={() => setShowDeviceModal(false)}>
+          <View
+            className='modal-card device-switch-card'
+            onClick={(event) => {
+              event.stopPropagation()
+            }}
+          >
+            <Text className='modal-title'>切换设备</Text>
+            {bindings.length === 0 ? (
+              <Text className='device-switch-empty'>当前还没有已绑定设备</Text>
+            ) : (
+              <View className='device-switch-list'>
+                {bindings.map((item) => {
+                  const isActive = binding?.device_id === item.device_id
+                  return (
+                    <View
+                      key={item.device_id}
+                      className={`device-switch-item ${isActive ? 'active' : ''}`}
+                      onClick={() => handleSelectBinding(item)}
+                    >
+                      <View className='device-switch-head'>
+                        <Text className='device-switch-id'>{item.device_id}</Text>
+                        {isActive && <Text className='device-switch-tag'>当前</Text>}
+                      </View>
+                      <Text className='device-switch-name'>{item.child_name || '待关联儿童'}</Text>
+                    </View>
+                  )
+                })}
+              </View>
+            )}
+            <View className='modal-actions'>
+              <Text className='modal-action cancel' onClick={() => setShowDeviceModal(false)}>
+                关闭
+              </Text>
+            </View>
+          </View>
+        </View>
+      )}
+
       {showModal && (
         <View className='modal-mask'>
-          <View className='modal-content'>
-            <View className='modal-header'>
-              <Text className='modal-title'>{modalType === 'add' ? '添加儿童' : '修改昵称'}</Text>
-            </View>
-            <View className='modal-body'>
-              <Input 
+          <View className='modal-card'>
+            <Text className='modal-title'>{modalType === 'add' ? '新建儿童资料' : '修改儿童昵称'}</Text>
+            <View className='modal-input-wrap'>
+              <Input
                 className='modal-input'
-                placeholder='请输入儿童昵称'
                 value={childName}
-                onInput={(e) => setChildName(e.detail.value)}
-                focus={true}
+                placeholder='请输入儿童昵称'
+                focus
+                onInput={(event) => setChildName(event.detail.value)}
               />
             </View>
-            <View className='modal-footer'>
-              <Text className='modal-btn cancel' onClick={handleModalCancel}>取消</Text>
-              <Text className='modal-btn confirm' onClick={handleModalConfirm}>确认</Text>
+            <View className='modal-actions'>
+              <Text className='modal-action cancel' onClick={handleCloseModal}>
+                取消
+              </Text>
+              <Text className='modal-action confirm' onClick={handleSubmitModal}>
+                确认
+              </Text>
             </View>
           </View>
         </View>
diff --git a/banban-mini/src/services/binding.ts b/banban-mini/src/services/binding.ts
index 79270dc..e0501a5 100644
--- a/banban-mini/src/services/binding.ts
+++ b/banban-mini/src/services/binding.ts
@@ -1,97 +1,126 @@
+import Taro from '@tarojs/taro'
 import { request } from './api'
 
+const SELECTED_BINDING_DEVICE_ID_KEY = 'selectedBindingDeviceId'
+
+function buildQuery(params: Record<string, string | number | undefined | null>): string {
+  return Object.entries(params)
+    .filter(([, value]) => value !== undefined && value !== null && value !== '')
+    .map(([key, value]) => `${encodeURIComponent(key)}=${encodeURIComponent(String(value))}`)
+    .join('&')
+}
+
 export interface Binding {
   device_id: string
   child_id: number | null
+  child_name?: string | null
   status: number
   bound_at: string
 }
 
-export interface BindStartResponse {
-  bind_token: string
-  expires_at: string
-}
+export interface BindingListItem extends Binding {}
 
-export interface BindHistoryItem {
-  device_id: string
-  child_id: number | null
-  bound_at: string
-  unbound_at?: string
-}
-
-export interface BindHistoryResponse {
-  items: BindHistoryItem[]
+export interface BindingListResponse {
+  items: BindingListItem[]
   total: number
-  next_cursor?: string
+  next_cursor?: number | null
+}
+
+export interface DirectBindPayload {
+  device_id: string
+  serial_number: string
+  child_id?: number
+}
+
+export function getSelectedBindingDeviceId(): string | null {
+  const value = Taro.getStorageSync(SELECTED_BINDING_DEVICE_ID_KEY)
+  const deviceId = String(value || '').trim()
+  return deviceId || null
+}
+
+export function setSelectedBindingDeviceId(deviceId?: string | null) {
+  const normalizedDeviceId = String(deviceId || '').trim()
+  if (!normalizedDeviceId) {
+    Taro.removeStorageSync(SELECTED_BINDING_DEVICE_ID_KEY)
+    return
+  }
+  Taro.setStorageSync(SELECTED_BINDING_DEVICE_ID_KEY, normalizedDeviceId)
+}
+
+export function clearSelectedBindingDeviceId() {
+  Taro.removeStorageSync(SELECTED_BINDING_DEVICE_ID_KEY)
+}
+
+export function resolveBindingSelection<T extends { device_id: string }>(items: T[]): T | null {
+  const selectedDeviceId = getSelectedBindingDeviceId()
+  const selectedBinding = selectedDeviceId ? items.find((item) => item.device_id === selectedDeviceId) || null : null
+  const activeBinding = selectedBinding || items[0] || null
+
+  if (activeBinding) {
+    setSelectedBindingDeviceId(activeBinding.device_id)
+  } else {
+    clearSelectedBindingDeviceId()
+  }
+
+  return activeBinding
 }
 
-// 获取当前绑定信息
 export async function getCurrentBinding(): Promise<Binding | null> {
   try {
     return await request<Binding>('/bindings/current')
-  } catch (err: any) {
-    if (err.status === 404) {
-      return null
-    }
-    throw err
+  } catch (error: any) {
+    if (error?.status === 404) return null
+    throw error
   }
 }
 
-// 开始绑定设备
-export async function startBind(data: {
-  device_id: string
-  child_id?: number
-}): Promise<BindStartResponse> {
-  return request<BindStartResponse>('/bindings/start', {
-    method: 'POST',
-    data,
+export async function getBindings(cursor?: number, limit: number = 20): Promise<BindingListResponse> {
+  const query = buildQuery({
+    cursor,
+    limit,
   })
+  return request<BindingListResponse>(`/bindings?${query}`)
 }
 
-// 确认绑定设备
-export async function confirmBind(data: {
-  bind_token: string
-  challenge_code: string
-}): Promise<{ device_id: string; child_id: number | null }> {
-  return request('/bindings/confirm', {
-    method: 'POST',
-    data,
-  })
-}
-
-// 获取设备绑定信息
 export async function getBinding(deviceId: string): Promise<Binding | null> {
-  // If no deviceId, get the first binding for this user
-  if (!deviceId) {
-    try {
-      // Try to get binding list - for now return null if no specific device
-      return null
-    } catch {
-      return null
-    }
+  try {
+    return await request<Binding>(`/bindings/${deviceId}`)
+  } catch (error: any) {
+    if (error?.status === 404) return null
+    throw error
   }
-  return request<Binding>(`/bindings/${deviceId}`)
 }
 
-// 解绑设备
-export async function unbindDevice(deviceId: string): Promise<void> {
-  return request(`/bindings/${deviceId}`, {
-    method: 'DELETE',
-  })
+export async function resolveActiveBinding(): Promise<Binding | null> {
+  const selectedDeviceId = getSelectedBindingDeviceId()
+
+  if (selectedDeviceId) {
+    const selectedBinding = await getBinding(selectedDeviceId)
+    if (selectedBinding) {
+      setSelectedBindingDeviceId(selectedBinding.device_id)
+      return selectedBinding
+    }
+
+    clearSelectedBindingDeviceId()
+  }
+
+  const currentBinding = await getCurrentBinding()
+  if (currentBinding?.device_id) {
+    setSelectedBindingDeviceId(currentBinding.device_id)
+  } else {
+    clearSelectedBindingDeviceId()
+  }
+
+  return currentBinding
 }
 
-// 直接绑定设备（手动输入设备码）
-export async function directBind(data: {
-  device_id: string
-  child_id?: number
-}): Promise<{ device_id: string; child_id: number | null }> {
+export async function directBind(data: DirectBindPayload): Promise<{ device_id: string; child_id: number | null }> {
   return request('/bindings/direct', {
     method: 'POST',
     data,
   })
 }
 
-// Bind child profile after device has been bound to parent account.
 export async function setBindingChild(
   deviceId: string,
   data: { child_id: number }
@@ -102,15 +131,8 @@ export async function setBindingChild(
   })
 }
 
-// 获取绑定历史
-export async function getBindHistory(
-  deviceId: string,
-  cursor?: string,
-  limit: number = 20
-): Promise<BindHistoryResponse> {
-  const params = new URLSearchParams()
-  if (cursor) params.append('cursor', cursor)
-  params.append('limit', String(limit))
-  
-  return request<BindHistoryResponse>(`/bindings/history/${deviceId}?${params.toString()}`)
+export async function unbindDevice(deviceId: string): Promise<void> {
+  return request(`/bindings/${deviceId}`, {
+    method: 'DELETE',
+  })
 }
diff --git a/banban-mini/src/services/child.ts b/banban-mini/src/services/child.ts
index 034ef59..67b8f29 100644
--- a/banban-mini/src/services/child.ts
+++ b/banban-mini/src/services/child.ts
@@ -1,5 +1,12 @@
 import { request } from './api'
 
+function buildQuery(params: Record<string, string | number | undefined | null>): string {
+  return Object.entries(params)
+    .filter(([, value]) => value !== undefined && value !== null && value !== '')
+    .map(([key, value]) => `${encodeURIComponent(key)}=${encodeURIComponent(String(value))}`)
+    .join('&')
+}
+
 export interface Child {
   child_id: number
   child_name: string
@@ -11,10 +18,9 @@ export interface Child {
 export interface ChildListResponse {
   items: Child[]
   total: number
-  next_cursor?: number
+  next_cursor?: number | null
 }
 
-// 创建小孩档案
 export async function createChild(data: {
   child_name: string
   child_gender?: number
@@ -26,24 +32,18 @@ export async function createChild(data: {
   })
 }
 
-// 获取小孩列表
-export async function getChildren(
-  cursor?: number,
-  limit: number = 20
-): Promise<ChildListResponse> {
-  const params = new URLSearchParams()
-  if (cursor) params.append('cursor', String(cursor))
-  params.append('limit', String(limit))
-  
-  return request<ChildListResponse>(`/children?${params.toString()}`)
+export async function getChildren(cursor?: number, limit: number = 20): Promise<ChildListResponse> {
+  const query = buildQuery({
+    cursor,
+    limit,
+  })
+  return request<ChildListResponse>(`/children?${query}`)
 }
 
-// 获取单个小孩信息
 export async function getChild(childId: number): Promise<Child> {
   return request<Child>(`/children/${childId}`)
 }
 
-// 更新小孩信息
 export async function updateChild(
   childId: number,
   data: { child_name?: string; child_gender?: number; child_birthday?: string }
@@ -52,4 +52,4 @@ export async function updateChild(
     method: 'PATCH',
     data,
   })
-}
\ No newline at end of file
+}