diff --git a/lib/core/network/dio_client.dart b/lib/core/network/dio_client.dart
index 22c2ae85..898cb898 100644
--- a/lib/core/network/dio_client.dart
+++ b/lib/core/network/dio_client.dart
@@ -9,8 +9,8 @@ class DioClient {
     final dio = Dio(
       BaseOptions(
         baseUrl: HttpApiConsts.baseUrl,
-        connectTimeout: const Duration(seconds: 5),
-        receiveTimeout: const Duration(seconds: 5),
+        connectTimeout: const Duration(seconds: 10),
+        receiveTimeout: const Duration(seconds: 10),
         headers: {'Content-Type': 'application/json'},
       ),
     );
diff --git a/lib/core/network/tcp/tcp_client.dart b/lib/core/network/tcp/tcp_client.dart
index 26ee94e7..2b6b5f1a 100644
--- a/lib/core/network/tcp/tcp_client.dart
+++ b/lib/core/network/tcp/tcp_client.dart
@@ -216,6 +216,7 @@ class TcpClient {
     debugPrint('tcp使用用户信息：$user');
     if (user == null || user.token == null) {
       debugPrint('❌ [TCP] 认证失败：用户未登录或 Token 为空，无法发送认证包');
+      disconnect();
       return; // 直接返回，不要发送无效包
     }
     username = user.username;
@@ -254,12 +255,14 @@ class TcpClient {
             (failure) {
           // 处理失败：打印日志或抛出异常
           debugPrint('❌ [AuthTcp] 获取设备列表失败：$failure');
+          _sendAuthPacket();
           throw Exception('获取设备列表失败：$failure');
         },
             (devices) async {
           // 处理成功：devices 现在是真正的 List<DeviceEntity>
           if (devices.isEmpty) {
             debugPrint('⚠️ [AuthTcp] 当前用户无可用设备，跳过切换步骤');
+
             return;
           }
 
@@ -273,6 +276,7 @@ class TcpClient {
           await switchResult.fold(
                 (failure) {
               debugPrint('❌ [AuthTcp] 切换设备失败：$failure');
+              _sendAuthPacket();
               throw Exception('切换设备失败：$failure');
             },
                 (success) {
diff --git a/lib/features/devices/presentation/bloc/devices_cubit.dart b/lib/features/devices/presentation/bloc/devices_cubit.dart
index 8f3e9328..98519f18 100644
--- a/lib/features/devices/presentation/bloc/devices_cubit.dart
+++ b/lib/features/devices/presentation/bloc/devices_cubit.dart
@@ -200,13 +200,21 @@ class DevicesCubit extends Cubit<DevicesState> {
 
   /// 绑定设备
   Future<void> bindDevice(String deviceId, String deviceAlias) async {
+
     emit(state.copyWith(isLoading: true, errorMessage: ''));
     try {
       final params = BindDeviceParams(deviceId, deviceAlias);
       final result = await _bindDeviceUseCase.call(params);
       result.fold(
         // 失败处理
-        (failure) => emit(state.copyWith(isLoading: false, errorMessage: failure.message ?? '绑定设备失败')),
+            (failure) {
+          emit(state.copyWith(
+            isLoading: false,
+            errorMessage: failure.message ?? '绑定设备失败',
+          ));
+          // 抛出异常，携带后端返回的错误消息（如“设备不存在”）
+          throw Exception(failure.message ?? '绑定设备失败');
+        },
         // 成功处理（返回 int 状态码）
         (successCode) {
           if (successCode == 1) {
@@ -219,7 +227,12 @@ class DevicesCubit extends Cubit<DevicesState> {
         },
       );
     } catch (e) {
-      emit(state.copyWith(isLoading: false, errorMessage: '绑定异常：${e.toString()}'));
+      // emit(state.copyWith(
+      //   isLoading: false,
+      //   errorMessage: '绑定异常：${e.toString()}',
+      // ));
+      // 🔥 重新抛出，传递给 UI
+      rethrow;
     }
   }
 
diff --git a/lib/features/my/presentation/web_view/user_info_pages.dart b/lib/features/my/presentation/web_view/user_info_pages.dart
index 60525c0a..15068d4c 100644
--- a/lib/features/my/presentation/web_view/user_info_pages.dart
+++ b/lib/features/my/presentation/web_view/user_info_pages.dart
@@ -184,43 +184,132 @@ class _UserInfoCardState extends State<UserInfoCard> {
 
   // 扫码绑定设备逻辑（保留）
   Future<void> _handleScanAndBind(BuildContext context) async {
-    final String? qrCode = await Navigator.push<String>(
+    bool isScanned = false;
+
+    // 1. 扫码逻辑 (保持不变)
+    final String? deviceCode = await Navigator.push<String>(
       context,
       MaterialPageRoute(
-        builder: (context) => MobileScanner(
-          onDetect: (capture) {
-            final List<Barcode> barcodes = capture.barcodes;
-            if (barcodes.isNotEmpty) {
-              final String? code = barcodes.first.rawValue;
-              if (code != null && code.isNotEmpty) {
-                Navigator.pop(context, code);
+        builder: (context) => Scaffold(
+          backgroundColor: Colors.transparent,
+          appBar: AppBar(
+            title: const Text('扫码绑定设备'),
+            backgroundColor: Colors.black54,
+            leading: IconButton(
+              icon: const Icon(Icons.close),
+              onPressed: () => Navigator.pop(context),
+            ),
+          ),
+          body: MobileScanner(
+            onDetect: (BarcodeCapture capture) {
+              if (isScanned) return;
+              final List<Barcode> barcodes = capture.barcodes;
+              if (barcodes.isNotEmpty) {
+                final String? code = barcodes.first.rawValue;
+                if (code != null && code.isNotEmpty) {
+                  isScanned = true;
+                  // 使用 addPostFrameCallback 确保在帧渲染后执行，避免锁死
+                  WidgetsBinding.instance.addPostFrameCallback((_) {
+                    if (context.mounted && Navigator.canPop(context)) {
+                      Navigator.pop(context, code);
+                    }
+                  });
+                }
               }
-            }
-          },
+            },
+          ),
         ),
       ),
     );
 
-    if (qrCode == null || qrCode.isEmpty) return;
+    if (deviceCode == null || deviceCode.isEmpty) {
+      return;
+    }
 
+    // 2. 确认对话框 (保持不变)
+    final bool? confirmBind = await showDialog<bool>(
+      context: context,
+      barrierDismissible: false,
+      builder: (context) => AlertDialog(
+        title: const Text('确认绑定设备'),
+        content: Column(
+          mainAxisSize: MainAxisSize.min,
+          crossAxisAlignment: CrossAxisAlignment.start,
+          children: [
+            const Text('设备信息：'),
+            const SizedBox(height: 8),
+            Text('设备编码：$deviceCode'),
+            const Text('设备状态：未绑定'),
+            const Text('设备类型：智能设备'),
+          ],
+        ),
+        actions: [
+          TextButton(
+            onPressed: () => Navigator.pop(context, false),
+            child: const Text('取消'),
+          ),
+          ElevatedButton(
+            onPressed: () => Navigator.pop(context, true),
+            child: const Text('确定绑定'),
+            style: ElevatedButton.styleFrom(backgroundColor: Colors.blue),
+          ),
+        ],
+      ),
+    );
+
+    if (confirmBind != true) {
+      return;
+    }
+
+    // 3. 显示加载框
+    // 保存 BuildContext 引用，防止后续 context 变化导致找不到正确的 Navigator
     showDialog(
       context: context,
       barrierDismissible: false,
-      builder: (context) => const Center(child: CircularProgressIndicator(color: Color(0xFF1677FF), strokeWidth: 4)),
+      builder: (loadingContext) => const Center(child: CircularProgressIndicator()),
     );
 
     try {
-      final devicesCubit = _getIt<DevicesCubit>();
-      // await devicesCubit.bindDevice(qrCode);
-      if (context.mounted) Navigator.pop(context);
-      if (context.mounted) {
-        ScaffoldMessenger.of(context).showSnackBar(const SnackBar(content: Text('设备绑定成功！'), backgroundColor: Colors.green));
+      final devicesCubit = GetIt.I<DevicesCubit>();
+      await devicesCubit.bindDevice(deviceCode, '');
+
+      // ✅ 成功：安全关闭加载框
+      if (context.mounted && Navigator.canPop(context)) {
+        Navigator.pop(context);
+        ScaffoldMessenger.of(context).showSnackBar(
+          const SnackBar(content: Text('设备绑定成功！'), backgroundColor: Colors.green),
+        );
       }
     } catch (e) {
-      if (context.mounted) Navigator.pop(context);
-      if (context.mounted) {
-        ScaffoldMessenger.of(context).showSnackBar(SnackBar(content: Text('绑定失败：$e'), backgroundColor: Colors.red));
+      // ✅ 失败：安全关闭加载框 (关键修复点)
+      // 即使发生了 Framework 错误，也要尝试关闭弹窗
+      if (context.mounted && Navigator.canPop(context)) {
+        Navigator.pop(context);
+
+        // 显示具体错误信息
+        ScaffoldMessenger.of(context).showSnackBar(
+          SnackBar(
+            content: Text('绑定失败：${e.toString()}'),
+            backgroundColor: Colors.red,
+            duration: const Duration(seconds: 4),
+          ),
+        );
+      } else {
+        // 极端情况：如果 Navigator 已经锁死无法 pop，尝试用其他方式提示用户
+        // 或者等待下一帧再试
+        WidgetsBinding.instance.addPostFrameCallback((_) {
+          if (context.mounted) {
+            // 尝试再次关闭，或者只显示错误提示
+            ScaffoldMessenger.of(context).showSnackBar(
+              SnackBar(
+                content: Text('绑定失败：${e.toString()} (请手动返回)'),
+                backgroundColor: Colors.orange,
+              ),
+            );
+          }
+        });
       }
+      debugPrint('设备绑定失败详情：$e');
     }
   }