diff --git a/energy_based_recorder.py b/energy_based_recorder.py
index 96d438f..27bf6fc 100644
--- a/energy_based_recorder.py
+++ b/energy_based_recorder.py
@@ -169,20 +169,31 @@ class EnergyBasedRecorder:
     def play_audio(self, filename):
         """播放音频文件"""
         try:
-            # 立即停止当前录音并清空缓冲区
+            print("🔇 准备播放，完全停止音频输入")
+            
+            # 立即停止当前录音并清空所有缓冲区
             if self.recording:
-                print("🔇 播放开始，停止当前录音")
                 self.recording = False
                 self.recorded_frames = []
                 self.recording_start_time = None
                 self.last_sound_time = None
             
-            # 清空预录音缓冲区，避免录制播放的音频
+            # 清空所有缓冲区
             self.pre_record_buffer = []
+            self.energy_history = []
+            
+            # 完全关闭输入流
+            if self.stream:
+                self.stream.stop_stream()
+                self.stream.close()
+                self.stream = None
             
             # 设置播放状态
             self.is_playing = True
             
+            # 等待一小段时间确保音频设备完全停止输入
+            time.sleep(0.5)
+            
             with wave.open(filename, 'rb') as wf:
                 channels = wf.getnchannels()
                 width = wf.getsampwidth()
@@ -209,7 +220,7 @@ class EnergyBasedRecorder:
             )
             
             print(f"🔊 开始播放: {filename}")
-            print("🚫 暂停录音处理，避免回声")
+            print("🚫 音频输入已完全关闭")
             
             # 分块播放音频
             for chunk in frames:
@@ -219,7 +230,7 @@ class EnergyBasedRecorder:
             playback_stream.close()
             
             print("✅ 播放完成")
-            print("🔄 恢复录音监听")
+            print("🔄 重新开启音频输入")
             
         except Exception as e:
             print(f"❌ 播放失败: {e}")
@@ -227,8 +238,16 @@ class EnergyBasedRecorder:
         finally:
             # 恢复播放状态
             self.is_playing = False
-            # 重置状态，准备重新监听
+            
+            # 等待播放完全结束
+            time.sleep(0.3)
+            
+            # 重新开启输入流
+            self._setup_audio()
+            
+            # 重置所有状态
             self.energy_history = []
+            print("📡 音频输入已重新开启")
     
     def play_with_system_player(self, filename):
         """使用系统播放器播放音频"""
@@ -236,11 +255,65 @@ class EnergyBasedRecorder:
             import subprocess
             cmd = ['aplay', filename]  # Linux系统
             print(f"🔊 使用系统播放器: {' '.join(cmd)}")
+            print("🚫 系统播放器播放中，音频输入保持关闭")
             subprocess.run(cmd, check=True)
             print("✅ 播放完成")
+            print("📡 音频输入已保持关闭状态")
         except Exception as e:
             print(f"❌ 系统播放器也失败: {e}")
     
+    def play_audio_safe(self, filename):
+        """安全的播放方式 - 使用系统播放器"""
+        try:
+            print("🔇 准备播放，完全停止音频输入")
+            
+            # 立即停止当前录音并清空所有缓冲区
+            if self.recording:
+                self.recording = False
+                self.recorded_frames = []
+                self.recording_start_time = None
+                self.last_sound_time = None
+            
+            # 清空所有缓冲区
+            self.pre_record_buffer = []
+            self.energy_history = []
+            
+            # 完全关闭输入流
+            if self.stream:
+                self.stream.stop_stream()
+                self.stream.close()
+                self.stream = None
+            
+            # 设置播放状态
+            self.is_playing = True
+            
+            # 等待确保音频设备完全停止
+            time.sleep(0.5)
+            
+            print(f"🔊 开始播放: {filename}")
+            print("🚫 使用系统播放器，音频输入已完全关闭")
+            
+            # 使用系统播放器
+            self.play_with_system_player(filename)
+            
+            print("🔄 准备重新开启音频输入")
+            
+        except Exception as e:
+            print(f"❌ 播放失败: {e}")
+        finally:
+            # 恢复播放状态
+            self.is_playing = False
+            
+            # 等待播放完全结束
+            time.sleep(0.5)
+            
+            # 重新开启输入流
+            self._setup_audio()
+            
+            # 重置所有状态
+            self.energy_history = []
+            print("📡 音频输入已重新开启")
+    
     def update_pre_record_buffer(self, audio_data):
         """更新预录音缓冲区"""
         self.pre_record_buffer.append(audio_data)
@@ -284,7 +357,8 @@ class EnergyBasedRecorder:
             if success and filename:
                 print("=" * 50)
                 print("🔊 播放刚才录制的音频...")
-                self.play_audio(filename)
+                # 优先使用系统播放器避免回声
+                self.play_audio_safe(filename)
                 print("=" * 50)
         
         self.recording = False