diff --git a/lib/modules/agent/controllers/agent_controller.dart b/lib/modules/agent/controllers/agent_controller.dart
index cc98107c4..7cdebb046 100644
--- a/lib/modules/agent/controllers/agent_controller.dart
+++ b/lib/modules/agent/controllers/agent_controller.dart
@@ -350,7 +350,7 @@ class AgentController extends GetxController {
 
           final token = event.data['token'] ?? '';
           final responseId = event.data['responseId'] ?? '';
-          Logger.i(TAG, 'AI回复Token: $token, responseId: $responseId');
+          // Logger.i(TAG, 'AI回复Token: $token, responseId: $responseId');
           if (token.isNotEmpty) {
             // 如果是新的回复或者响应ID改变，创建新消息
             if (_isNewAssistantResponse ||
diff --git a/local_plugins/agent_service/android/src/main/kotlin/com/yunqiinnovation/agent_service/AgentService.kt b/local_plugins/agent_service/android/src/main/kotlin/com/yunqiinnovation/agent_service/AgentService.kt
index ea0a1b19a..e18de276f 100644
--- a/local_plugins/agent_service/android/src/main/kotlin/com/yunqiinnovation/agent_service/AgentService.kt
+++ b/local_plugins/agent_service/android/src/main/kotlin/com/yunqiinnovation/agent_service/AgentService.kt
@@ -16,6 +16,9 @@ import java.util.Collections
 import kotlin.coroutines.CoroutineContext
 import com.yunqiinnovation.ble_service.BleService
 import android.media.MediaPlayer
+import java.util.concurrent.atomic.AtomicBoolean
+import kotlinx.coroutines.sync.Mutex
+import kotlinx.coroutines.sync.withLock
 import com.deep_voice.speech.tts.TtsEvent
 import com.deep_voice.speech.tts.TtsEventListener
 import com.deep_voice.speech.tts.TtsEventType
@@ -43,7 +46,7 @@ object AgentService : CoroutineScope {
     // 协程相关
     private val job = SupervisorJob()
     override val coroutineContext: CoroutineContext
-        get() = Dispatchers.Main + job
+        get() = Dispatchers.IO + job
     
     // 上下文和监听器
     private lateinit var context: Context
@@ -73,16 +76,24 @@ object AgentService : CoroutineScope {
     // 音频播放器
     private var audioPlayer: AudioPlayer? = null          // 初始化音频播放器
     
-    // 状态
-    private var isInitialized = false
-    var isRecognitionActive = false
-        private set
-    var isTtsSpeaking = false
-        private set
-    var hasSpeechDetected = false
-        private set
-    var isAiStreaming = false
-        private set
+    // 状态 - 使用原子类型确保线程安全
+    private val _isInitialized = AtomicBoolean(false)
+    val isInitialized: Boolean get() = _isInitialized.get()
+    
+    private val _isRecognitionActive = AtomicBoolean(false)
+    val isRecognitionActive: Boolean get() = _isRecognitionActive.get()
+    
+    private val _isTtsSpeaking = AtomicBoolean(false)
+    val isTtsSpeaking: Boolean get() = _isTtsSpeaking.get()
+    
+    private val _hasSpeechDetected = AtomicBoolean(false)
+    val hasSpeechDetected: Boolean get() = _hasSpeechDetected.get()
+    
+    private val _isAiStreaming = AtomicBoolean(false)
+    val isAiStreaming: Boolean get() = _isAiStreaming.get()
+    
+    // 用于保护复杂状态操作的互斥锁
+    private val stateMutex = Mutex()
     
     // AI流生成相关
     private var currentAiJob: Job? = null
@@ -175,7 +186,7 @@ object AgentService : CoroutineScope {
             // 加载最近的聊天记录
             loadChatHistory()
             
-            isInitialized = true
+            _isInitialized.set(true)
             return true
         } catch (e: Exception) {
             Log.e(TAG, "初始化失败: ${e.message}")
@@ -201,6 +212,7 @@ object AgentService : CoroutineScope {
             // 释放ChatAPI服务
             if (::chatApiService.isInitialized) {
                 chatApiService.cancelCurrentStream()
+                chatApiService.dispose()
             }
             
             // 释放TTS服务
@@ -209,7 +221,7 @@ object AgentService : CoroutineScope {
             
             job.cancel()
             clearListeners()
-            isInitialized = false
+            _isInitialized.set(false)
         } catch (e: Exception) {
             Log.e(TAG, "释放资源异常: ${e.message}")
         }
@@ -252,17 +264,17 @@ object AgentService : CoroutineScope {
                 override fun onEvent(event: TtsEvent) {
                     when (event.type) {
                         TtsEventType.SYNTHESIS_STARTED -> {
-                            isTtsSpeaking = true
+                            _isTtsSpeaking.set(true)
                             restartIdleCheck()
                             sendEvent("tts_started", mapOf("status" to "started"))
                         }
                         TtsEventType.SYNTHESIS_COMPLETED -> {
-                            isTtsSpeaking = false
+                            _isTtsSpeaking.set(false)
                             restartIdleCheck()
                             sendEvent("tts_completed", mapOf("status" to "completed"))
                         }
                         TtsEventType.SYNTHESIS_CANCELED -> {
-                            isTtsSpeaking = false
+                            _isTtsSpeaking.set(false)
                             restartIdleCheck()
                             sendEvent("tts_canceled", mapOf("status" to "canceled"))
                         }
@@ -275,7 +287,7 @@ object AgentService : CoroutineScope {
                             sendEvent("playback_completed", mapOf("status" to "playback_completed"))
                         }
                         TtsEventType.ERROR -> {
-                            isTtsSpeaking = false
+                            _isTtsSpeaking.set(false)
                             restartIdleCheck()
                             val params = event.params
                             val code = params["errorCode"] as? String ?: "UNKNOWN_ERROR"
@@ -379,8 +391,8 @@ object AgentService : CoroutineScope {
             return false
         }
         
-        isRecognitionActive = true
-        hasSpeechDetected = false
+        _isRecognitionActive.set(true)
+        _hasSpeechDetected.set(false)
         
         try {
             val audioSourceType = if (isExternalActive) {
@@ -393,7 +405,7 @@ object AgentService : CoroutineScope {
                     if (recognizing.isNotEmpty()) {
                         // 检测到语音，更新状态
                         val previousHasSpeech = hasSpeechDetected
-                        hasSpeechDetected = true
+                        _hasSpeechDetected.set(true)
                         
                         if (!previousHasSpeech) {
                             restartIdleCheck()
@@ -408,21 +420,21 @@ object AgentService : CoroutineScope {
                         if (isTtsSpeaking || isAiStreaming) {
                             val currentTime = System.currentTimeMillis()
                             
-                            // // 防抖处理：避免过于频繁的打断
-                            // if (currentTime - lastInterruptTime < INTERRUPT_DEBOUNCE_MS) {
-                            //     return
-                            // }
+                            // 防抖处理：避免过于频繁的打断
+                            if (currentTime - lastInterruptTime < INTERRUPT_DEBOUNCE_MS) {
+                                return
+                            }
                             
-                            // // 简单过滤：太短的内容可能是噪音
-                            // if (recognizing.trim().length < 2) {
-                            //     return
-                            // }
+                            // 简单过滤：太短的内容可能是噪音
+                            if (recognizing.trim().length < 2) {
+                                return
+                            }
                             
-                            // // 过滤纯语气词
-                            // val trimmedText = recognizing.trim().lowercase()
-                            // if (FILLER_WORDS.contains(trimmedText)) {
-                            //     return
-                            // }
+                            // 过滤纯语气词
+                            val trimmedText = recognizing.trim().lowercase()
+                            if (FILLER_WORDS.contains(trimmedText)) {
+                                return
+                            }
                             
                             // 执行打断
                             lastInterruptTime = currentTime
@@ -443,7 +455,7 @@ object AgentService : CoroutineScope {
                     
                     // 重置状态，继续识别
                     val previousHasSpeech = hasSpeechDetected
-                    hasSpeechDetected = false
+                    _hasSpeechDetected.set(false)
                     
                     if (previousHasSpeech) {
                         restartIdleCheck()
@@ -460,13 +472,13 @@ object AgentService : CoroutineScope {
                 override fun onSessionStopped() {
                     sendEvent("recognition_stopped", mapOf("status" to "stopped"))
 
-                    isRecognitionActive = false
+                    _isRecognitionActive.set(false)
                     stopIdleCheck()
                     audioPlayer?.playAudio(R.raw.stop)
                 }
                 
                 override fun onCanceled(reason: String, errorDetails: String) {
-                    isRecognitionActive = false
+                    _isRecognitionActive.set(false)
                     stopIdleCheck()
                     BleService.closeCodec()
                     sendEvent("recognition_canceled", mapOf(
@@ -476,7 +488,7 @@ object AgentService : CoroutineScope {
                 }
                 
                 override fun onError(error: String) {
-                    isRecognitionActive = false
+                    _isRecognitionActive.set(false)
                     stopIdleCheck()
                     BleService.closeCodec()
                     Log.e(TAG, "语音识别错误: $error")
@@ -488,7 +500,7 @@ object AgentService : CoroutineScope {
             }, audioSourceType)
             return true
         } catch (e: Exception) {
-            isRecognitionActive = false
+            _isRecognitionActive.set(false)
             Log.e(TAG, "启动语音识别失败: ${e.message}")
             sendEvent("error", mapOf(
                 "code" to "RECOGNITION_START_ERROR",
@@ -510,11 +522,11 @@ object AgentService : CoroutineScope {
         try {
             azureAsrHelper?.stopContinuousRecognition()
             BleService.closeCodec()
-            isRecognitionActive = false 
+            _isRecognitionActive.set(false) 
             stopIdleCheck()
         } catch (e: Exception) {
             Log.e(TAG, "停止语音识别异常: ${e.message}")
-            isRecognitionActive = false
+            _isRecognitionActive.set(false)
             stopIdleCheck()
         }
     }
@@ -549,7 +561,7 @@ object AgentService : CoroutineScope {
         if (isAiStreaming) {
             try {
                 // 先更新状态，避免回调时的状态不一致
-                isAiStreaming = false
+                _isAiStreaming.set(false)
                 
                 // 取消当前AI生成任务
                 currentAiJob?.cancel()
@@ -561,7 +573,7 @@ object AgentService : CoroutineScope {
             } catch (e: Exception) {
                 Log.e(TAG, "停止AI流输出异常", e)
                 // 确保状态被重置，即使发生异常
-                isAiStreaming = false
+                _isAiStreaming.set(false)
                 currentAiJob = null
             }
         }
@@ -655,7 +667,7 @@ object AgentService : CoroutineScope {
         currentAiJob = launch {
             try {
                 // 设置状态为正在流式输出
-                isAiStreaming = true
+                _isAiStreaming.set(true)
                 
                 // 使用历史记录作为上下文发送到OpenAI
                 val responseBuilder = StringBuilder()
@@ -753,7 +765,7 @@ object AgentService : CoroutineScope {
                             // 保存聊天记录
                             saveChatMessage(displayText, response,aiMetadata,userMetadata.toString())
                             // 标记AI流式输出已完成
-                            isAiStreaming = false
+                            _isAiStreaming.set(false)
                             currentAiJob = null
                         }
                         
@@ -765,7 +777,7 @@ object AgentService : CoroutineScope {
                             ))
                             
                             // 标记AI流式输出已完成
-                            isAiStreaming = false
+                            _isAiStreaming.set(false)
                             currentAiJob = null
                         }
                         
@@ -809,7 +821,7 @@ object AgentService : CoroutineScope {
                 ))
                 
                 // 确保状态被重置
-                isAiStreaming = false
+                _isAiStreaming.set(false)
                 currentAiJob = null
             }
         }
@@ -873,7 +885,7 @@ object AgentService : CoroutineScope {
         if (text.isEmpty()) return
         
         // 更新状态
-        isTtsSpeaking = true
+        _isTtsSpeaking.set(true)
         restartIdleCheck() // 状态变化，重启检测
         
         // 直接调用TTS，无需协程包装
@@ -887,7 +899,7 @@ object AgentService : CoroutineScope {
         if (isTtsSpeaking) {
             ttsService?.stop()
             
-            isTtsSpeaking = false
+            _isTtsSpeaking.set(false)
             restartIdleCheck() // 状态变化，重启检测
             sendEvent("tts_stopped", mapOf("status" to "stopped"))
         }
@@ -964,9 +976,8 @@ object AgentService : CoroutineScope {
      * 发送事件
      */
     private fun sendEvent(eventName: String, data: Map<String, Any>) {
-        // 使用协程确保在主线程上执行
-        launch {
-            // 我们已在主线程上下文中启动协程，无需再切换线程
+        // 切换到主线程执行监听器回调，避免 UI 更新问题
+        launch(Dispatchers.Main) {
             listeners.forEach { listener ->
                 try {
                     listener.onEvent(eventName, data)
diff --git a/local_plugins/bytedance_speech/android/src/main/kotlin/com/deep_voice/bytedance_speech/BytedanceAudioPlayer.kt b/local_plugins/bytedance_speech/android/src/main/kotlin/com/deep_voice/bytedance_speech/BytedanceAudioPlayer.kt
index ac7cf0afd..b3cffcbd1 100644
--- a/local_plugins/bytedance_speech/android/src/main/kotlin/com/deep_voice/bytedance_speech/BytedanceAudioPlayer.kt
+++ b/local_plugins/bytedance_speech/android/src/main/kotlin/com/deep_voice/bytedance_speech/BytedanceAudioPlayer.kt
@@ -24,6 +24,7 @@ class BytedanceAudioPlayer(private val context: Context) : AudioDataListener {
         private const val SAMPLE_RATE = 24000
         private const val CHANNEL_CONFIG = AudioFormat.CHANNEL_OUT_MONO
         private const val AUDIO_FORMAT = AudioFormat.ENCODING_PCM_16BIT
+        private const val VOLUME_REDUCTION = 0.7f  // 降低音量以减少回音
     }
     
     private var audioTrack: AudioTrack? = null
@@ -206,6 +207,7 @@ class BytedanceAudioPlayer(private val context: Context) : AudioDataListener {
         }
     }
     
+    
     /**
      * 初始化 AudioTrack
      */
@@ -213,13 +215,18 @@ class BytedanceAudioPlayer(private val context: Context) : AudioDataListener {
         audioTrack?.release()
         
         val minBufferSize = AudioTrack.getMinBufferSize(SAMPLE_RATE, CHANNEL_CONFIG, AUDIO_FORMAT)
-        val bufferSize = minBufferSize * 2
+        val bufferSize = minBufferSize * 2  // 使用较小的缓冲区以降低延迟
         
         audioTrack = if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.M) {
-            AudioTrack.Builder()
+            val builder = AudioTrack.Builder()
                 .setAudioAttributes(
                     AudioAttributes.Builder()
-                        .setUsage(AudioAttributes.USAGE_MEDIA)
+                        .setUsage(
+                            // 扬声器模式下默认使用语音通信模式以启用回声消除
+                            if (audioOutputDevice == AudioOutputDevice.SPEAKER)
+                                AudioAttributes.USAGE_VOICE_COMMUNICATION
+                            else AudioAttributes.USAGE_MEDIA
+                        )
                         .setContentType(AudioAttributes.CONTENT_TYPE_SPEECH)
                         .build()
                 )
@@ -232,7 +239,13 @@ class BytedanceAudioPlayer(private val context: Context) : AudioDataListener {
                 )
                 .setBufferSizeInBytes(bufferSize)
                 .setTransferMode(AudioTrack.MODE_STREAM)
-                .build()
+            
+            // API 26+ 设置低延迟模式
+            if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.O) {
+                builder.setPerformanceMode(AudioTrack.PERFORMANCE_MODE_LOW_LATENCY)
+            }
+            
+            builder.build()
         } else {
             @Suppress("DEPRECATION")
             AudioTrack(
@@ -247,6 +260,9 @@ class BytedanceAudioPlayer(private val context: Context) : AudioDataListener {
         
         audioTrack?.setPlaybackPositionUpdateListener(playbackListener)
         
+        // 设置音量以减少回音
+        audioTrack?.setVolume(VOLUME_REDUCTION)
+        
         if (Build.VERSION.SDK_INT >= Build.VERSION_CODES.S) {
             setPreferredDeviceForTrack()
         } else {
@@ -268,13 +284,17 @@ class BytedanceAudioPlayer(private val context: Context) : AudioDataListener {
                     AudioOutputDevice.DEFAULT -> {
                         track.setPreferredDevice(null)
                         manager.isSpeakerphoneOn = false
-                        manager.mode = AudioManager.MODE_NORMAL
+                        // 默认模式下使用通信模式以获得更好的音频处理
+                        manager.mode = AudioManager.MODE_IN_COMMUNICATION
                     }
                     
                     AudioOutputDevice.SPEAKER -> {
                         val speaker = manager.getDevices(AudioManager.GET_DEVICES_OUTPUTS)
                             .firstOrNull { it.type == AudioDeviceInfo.TYPE_BUILTIN_SPEAKER }
                         speaker?.let { track.setPreferredDevice(it) }
+                        // 扬声器模式下始终启用通信模式以获得回声消除
+                        manager.mode = AudioManager.MODE_IN_COMMUNICATION
+                        manager.isSpeakerphoneOn = true
                     }
                     
                     AudioOutputDevice.HEADPHONES -> {
@@ -287,6 +307,9 @@ class BytedanceAudioPlayer(private val context: Context) : AudioDataListener {
                             }
                         headphones?.let { track.setPreferredDevice(it) }
                             ?: track.setPreferredDevice(null)
+                        // 耳机模式下可以使用普通模式
+                        manager.mode = AudioManager.MODE_NORMAL
+                        manager.isSpeakerphoneOn = false
                     }
                 }
             }
@@ -300,16 +323,19 @@ class BytedanceAudioPlayer(private val context: Context) : AudioDataListener {
         audioManager?.let { manager ->
             when (audioOutputDevice) {
                 AudioOutputDevice.DEFAULT -> {
-                    manager.mode = AudioManager.MODE_NORMAL
+                    // 默认模式下使用通信模式以获得更好的音频处理
+                    manager.mode = AudioManager.MODE_IN_COMMUNICATION
                     manager.isSpeakerphoneOn = false
                 }
                 
                 AudioOutputDevice.SPEAKER -> {
-                    manager.mode = AudioManager.MODE_NORMAL
+                    // 扬声器模式下始终启用通信模式以获得回声消除
+                    manager.mode = AudioManager.MODE_IN_COMMUNICATION
                     manager.isSpeakerphoneOn = true
                 }
                 
                 AudioOutputDevice.HEADPHONES -> {
+                    // 耳机模式下可以使用普通模式
                     manager.mode = AudioManager.MODE_NORMAL
                     manager.isSpeakerphoneOn = false
                 }
diff --git a/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/ChatApiService.kt b/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/ChatApiService.kt
index 55485623b..ee7fae90a 100644
--- a/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/ChatApiService.kt
+++ b/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/ChatApiService.kt
@@ -111,6 +111,10 @@ class ChatApiService(private val context: android.content.Context? = null) : Cor
     
     override val coroutineContext: CoroutineContext = Dispatchers.IO + SupervisorJob()
     
+    companion object {
+        private const val TAG = "ChatApiService"
+    }
+    
     // MARK: - 属性
     private var baseUrl = "https://api.openai.com/v1/"
     private var apiKey = ""
@@ -218,8 +222,8 @@ class ChatApiService(private val context: android.content.Context? = null) : Cor
             mcpConfigJson = mcpServer
             // 异步初始化MCP客户端
             launch {
-                // initializeMcpClient(mcpServer)
-                initializeMcpClient("{}")
+                initializeMcpClient(mcpServer)
+                // initializeMcpClient("{}")
             }
             
             isInitialized = apiKey.isNotEmpty()
@@ -514,8 +518,8 @@ class ChatApiService(private val context: android.content.Context? = null) : Cor
         )
         // 通知上层工具调用事件
         currSessionCallback?.onFunctionCall(convertMapToJsonObject(functionCall))
-        // 在后台队列处理工具调用
-        launch {
+        // 在当前协程作用域内处理工具调用，使用async确保生命周期管理
+        val toolCallDeferred = async {
             try {
                 if (sessionid == currSessionId) {
                     // 通过MCP客户端处理工具调用
@@ -587,6 +591,15 @@ class ChatApiService(private val context: android.content.Context? = null) : Cor
             }
         }
         
+        // 等待工具调用完成，确保生命周期管理
+        try {
+            toolCallDeferred.await()
+        } catch (e: CancellationException) {
+            // 协程被取消，确保子任务也被取消
+            toolCallDeferred.cancel()
+            throw e
+        }
+        
         return true
     }
     
@@ -780,7 +793,7 @@ class ChatApiService(private val context: android.content.Context? = null) : Cor
                                 description = description,
                                 parameters = parameters
                             )
-                            Log.d("ChatApiService", "AI携带工具: $name, 参数定义: $parameters")
+                            // Log.d("ChatApiService", "AI携带工具: $name, 参数定义: $parameters")
                             tools.add(tool)
                             
                         } catch (e: Exception) {
@@ -813,6 +826,30 @@ class ChatApiService(private val context: android.content.Context? = null) : Cor
         }
     }
     
+    /**
+     * 释放所有资源
+     * 统一的资源管理方法，确保所有协程被正确取消
+     */
+    fun dispose() {
+        runBlocking {
+            // 取消当前流式任务
+            currentStreamJob?.cancelAndJoin()
+            currentStreamJob = null
+            
+            // 关闭MCP客户端
+            closeMcpClient()
+            
+            // 取消所有子协程
+            coroutineContext[Job]?.cancelChildren()
+            
+            // 清理其他资源
+            currSessionCallback = null
+            currSessionId = ""
+            currentMessages = emptyList()
+            toolCalls.clear()
+        }
+    }
+    
     /**
      * 处理MCP工具调用
      * 
diff --git a/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/MCPSubClient.kt b/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/MCPSubClient.kt
index 3fe6b926a..77393a44a 100644
--- a/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/MCPSubClient.kt
+++ b/local_plugins/chat_api/android/src/main/kotlin/com/yunqiinnovation/chat_api/MCPSubClient.kt
@@ -129,7 +129,7 @@ class MCPSubClient(
                 "properties" to emptyMap<String, Any>(),
                 "required" to emptyList<String>()
             )
-            Log.w(TAG, "解析工具数据: ${tool.name} ${parametersMap}")
+            // Log.w(TAG, "解析工具数据: ${tool.name} ${parametersMap}")
             val toolMap = mapOf(
                 "type" to "function",
                 "function" to mapOf(
@@ -175,7 +175,7 @@ class MCPSubClient(
                 name = name,
                 arguments = argumentsJson
             )
-            
+            Log.d(TAG, "[$serverId] 调用工具 '$name'，参数: ${argumentsJson.toString()}")
             // 调用工具
             val result = mcpClient?.callTool(request)