diff --git a/miniprogram/pages/connectedDevice/connectedDevice.ts b/miniprogram/pages/connectedDevice/connectedDevice.ts
index 79c0e4a..7094ef4 100644
--- a/miniprogram/pages/connectedDevice/connectedDevice.ts
+++ b/miniprogram/pages/connectedDevice/connectedDevice.ts
@@ -29,7 +29,6 @@ let scannedDevices: ScannedDevice[] = []
 let unsubDevicesList: (() => void) | null = null
 let unsubDisconnected: (() => void) | null = null
 let unsubDeviceConnect: (() => void) | null = null
-let unsubDeviceInfo: (() => void) | null = null
 /** 连接流程的清理句柄 */
 let connectCleanup: {
     timer: number | null
@@ -47,8 +46,6 @@ Page({
     },
 
     onShow() {
-        // 订阅设备信息，连接后拿到 SN 绑定到用户
-        this._subscribeDeviceInfo()
         // 从其他页面返回时同步连接状态
         if (leFuService.isConnected) {
             this._markConnected()
@@ -66,8 +63,6 @@ Page({
     },
 
     onUnload() {
-        unsubDeviceInfo?.()
-        unsubDeviceInfo = null
         leFuService.stopScan()
         this._clearSubscriptions()
         this._clearConnectCleanup()
@@ -108,31 +103,35 @@ Page({
         wx.openAppAuthorizeSetting()
     },
 
-    /** 订阅设备固件信息，拿到 SN 后绑定到当前用户 */
-    _subscribeDeviceInfo() {
-        unsubDeviceInfo?.()
-        unsubDeviceInfo = leFuService.onDeviceInfo((info) => {
-            const sn = info?.serialNumber
-            if (!sn) return
-            this._bindDevice(sn)
-        })
-    },
-
-    /** 调用接口把设备 SN 绑定到已保存的用户信息 */
-    _bindDevice(sn: string) {
+    /** 调用接口把设备 SN 绑定到已保存的用户信息，成功后回调 */
+    _bindDevice(sn: string, onSuccess?: () => void) {
         const userInfo = wx.getStorageSync('userInfo') as UserInfo | null
         const idCard = userInfo?.idCard
-        if (!idCard) return
         const connectDeviceInfo = leFuService.lastRawDevice ? JSON.stringify(leFuService.lastRawDevice) : ''
+        if (!idCard) {
+            onSuccess?.()
+            return
+        }
         bindDevice({ sn, idCard, connectDeviceInfo })
             .then((res) => {
                 console.log('[connectedDevice] bindDevice 成功:', res)
+                onSuccess?.()
             })
             .catch((err) => {
                 console.error('[connectedDevice] bindDevice 失败:', err)
+                this._resetAfterBindFail()
             })
     },
 
+    /** bindDevice 失败后的清理重置：断开连接、清缓存、重置页面状态 */
+    _resetAfterBindFail() {
+        leFuService.disconnect()
+        wx.removeStorageSync('connectDeviceInfo')
+        scannedDevices = []
+        this.setData({ status: 'idle', deviceList: [] })
+        wx.showToast({ title: '绑定失败，请重试', icon: 'none' })
+    },
+
     /** 将所有卡片置为未连接 */
     _markAllDisconnected() {
         this.setData({
@@ -333,10 +332,12 @@ Page({
 
         connectCleanup.unsubConnect = leFuService.onDeviceConnect(() => {
             finish()
-            wx.setStorageSync('connectDeviceInfo', { ...scanned.raw, scaleDeviceName: scanned.raw.name })
-            if (!isAuto) {
+            const sn = leFuService.deviceInfo?.serialNumber
+            // 手动/自动连接：绑定设备成功后缓存设备并跳配网
+            this._bindDevice(sn ?? '', () => {
+                wx.setStorageSync('connectDeviceInfo', { ...scanned.raw, scaleDeviceName: scanned.raw.name })
                 wx.navigateTo({ url: '/pages/connectedWifi/connectedWifi' })
-            }
+            })
         })
     },