diff --git a/recorder.py b/recorder.py
index 405783d..765c780 100644
--- a/recorder.py
+++ b/recorder.py
@@ -625,10 +625,14 @@ class EnergyBasedRecorder:
                                         tts_file = self.text_to_speech(llm_response)
                                         if tts_file:
                                             print("✅ AI语音回复完成")
+                                            # 删除录音文件
+                                            self._safe_delete_file(filename, "录音文件")
                                         else:
                                             print("❌ 文本转语音失败")
                                     else:
                                         print("ℹ️  文本转语音功能已禁用")
+                                        # 如果不启用TTS，直接删除录音文件
+                                        self._safe_delete_file(filename, "录音文件")
                                 else:
                                     print("❌ 大语言模型调用失败")
                             else:
@@ -1063,6 +1067,17 @@ class EnergyBasedRecorder:
             print(f"❌ LLM调用失败: {e}")
             return None
     
+    def _safe_delete_file(self, filepath, description="文件"):
+        """安全删除文件"""
+        try:
+            if filepath and os.path.exists(filepath):
+                os.remove(filepath)
+                print(f"🗑️  已删除{description}: {filepath}")
+                return True
+        except Exception as e:
+            print(f"⚠️  删除{description}失败: {e}")
+        return False
+    
     def generate_tts_filename(self):
         """生成TTS文件名"""
         timestamp = time.strftime("%Y%m%d_%H%M%S")
@@ -1167,9 +1182,14 @@ class EnergyBasedRecorder:
                         print("ℹ️  跳过播放TTS音频（无可用播放器）")
                         print(f"📁 TTS音频已保存到: {output_file}")
                     
+                    # 播放完成后删除PCM文件
+                    self._safe_delete_file(output_file, "TTS音频文件")
+                    
                     return output_file
                 else:
                     print("❌ 未接收到TTS音频数据")
+                    # 尝试删除可能存在的空文件
+                    self._safe_delete_file(output_file, "空的TTS音频文件")
                     return None
                     
             finally:
diff --git a/tts_response_20250920_165657.mp3 b/tts_response_20250920_165657.mp3
deleted file mode 100644
index 763b82b..0000000
Binary files a/tts_response_20250920_165657.mp3 and /dev/null differ
diff --git a/tts_test.mp3 b/tts_test.mp3
deleted file mode 100644
index 46dd725..0000000
Binary files a/tts_test.mp3 and /dev/null differ