diff --git a/assets/images/ai0_hd.png b/assets/images/ai0_hd.png
new file mode 100644
index 0000000..fca0932
Binary files /dev/null and b/assets/images/ai0_hd.png differ
diff --git a/lib/widgets/floating_icon.dart b/lib/widgets/floating_icon.dart
index 9395bdd..1bce012 100644
--- a/lib/widgets/floating_icon.dart
+++ b/lib/widgets/floating_icon.dart
@@ -4,6 +4,7 @@ import '../services/message_service.dart';
 import '../screens/full_screen.dart';
 import '../screens/part_screen.dart';
 import 'floating_icon_with_wave.dart';
+import 'dart:async'; // 添加此行
 
 class FloatingIcon extends StatefulWidget {
   const FloatingIcon({super.key});
@@ -17,22 +18,36 @@ class _FloatingIconState extends State<FloatingIcon>
   Offset _position = const Offset(10, 120);
   final iconSize = 80.0;
   bool _isShowPartScreen = false;
-  
+
   late AnimationController _waveAnimationController;
 
+  // 新增：图片切换相关
+  int _imageIndex = 0;
+  late final List<String> _iconImages = [
+    'assets/images/ai1_hd.png',
+    'assets/images/ai0_hd.png',
+  ];
+  Timer? _imageTimer; // 用于定时切换图片
+
   @override
   void initState() {
     super.initState();
-    // VehicleStateService();
     _waveAnimationController = AnimationController(
       duration: const Duration(milliseconds: 1000),
       vsync: this,
     );
+    // 使用Timer.periodic定时切换图片
+    _imageTimer = Timer.periodic(const Duration(seconds: 3), (timer) {
+      setState(() {
+        _imageIndex = (_imageIndex + 1) % _iconImages.length;
+      });
+    });
   }
 
   @override
   void dispose() {
     _waveAnimationController.dispose();
+    _imageTimer?.cancel(); // 释放Timer
     super.dispose();
   }
 
@@ -80,7 +95,6 @@ class _FloatingIconState extends State<FloatingIcon>
           right: _position.dx,
           child: Consumer<MessageService>(
             builder: (context, messageService, child) {
-              // 立即响应录音状态变化，控制动画
               WidgetsBinding.instance.addPostFrameCallback((_) {
                 if (messageService.isRecording) {
                   if (!_waveAnimationController.isAnimating) {
@@ -92,17 +106,15 @@ class _FloatingIconState extends State<FloatingIcon>
                   }
                 }
               });
-              
+
               return GestureDetector(
                 onTap: _showFullScreen,
                 onLongPress: () async {
                   _showPartScreen();
-                  // 立即启动动画
                   _waveAnimationController.repeat();
                   await messageService.startVoiceInput();
                 },
                 onLongPressUp: () async {
-                  // 立即停止动画
                   _waveAnimationController.stop();
                   await messageService.stopAndProcessVoiceInput();
                   final hasMessage = messageService.messages.isNotEmpty;
@@ -118,7 +130,7 @@ class _FloatingIconState extends State<FloatingIcon>
                         waveColor: Colors.white,
                       )
                     : Image.asset(
-                        'assets/images/ai1_hd.png',
+                        _iconImages[_imageIndex],
                         width: iconSize,
                         height: iconSize,
                       ),