diff --git a/asr/asr_base.py b/asr/asr_base.py
index 73dcc9e..4eadd41 100644
--- a/asr/asr_base.py
+++ b/asr/asr_base.py
@@ -17,7 +17,7 @@ class AsrBase:
 
         self._stop_event = threading.Event()
         self._stop_event.set()
-        self._thread = threading.Thread(target=self._recognize_loop)
+        self._thread = threading.Thread(target=self._recognize_loop, name="AsrBaseThread")
         self._thread.start()
 
     def __del__(self):
diff --git a/asr/sherpa_ncnn_asr.py b/asr/sherpa_ncnn_asr.py
index 629f90e..cefe451 100644
--- a/asr/sherpa_ncnn_asr.py
+++ b/asr/sherpa_ncnn_asr.py
@@ -63,6 +63,15 @@ class SherpaNcnnAsr(AsrBase):
         logger.info(f'_recognize_loop')
         print(f'_recognize_loop')
 
+        while self._stop_event.is_set():
+            logger.info(f'_recognize_loop000')
+            self._notify_complete('介绍中国5000年历史文学')
+            logger.info(f'_recognize_loop111')
+            segment_id += 1
+            time.sleep(20)
+            logger.info(f'_recognize_loop222')
+        logger.info(f'_recognize_loop exit')
+'''
         with sd.InputStream(channels=1, dtype="float32", samplerate=self._sample_rate) as s:
             while self._stop_event.is_set():
                 samples, _ = s.read(self._samples_per_read)  # a blocking read
@@ -84,12 +93,4 @@ class SherpaNcnnAsr(AsrBase):
                         segment_id += 1
                     self._recognizer.reset()
 '''
-        while self._stop_event.is_set():
-            logger.info(f'_recognize_loop000')
-            self._notify_complete('介绍中国5000年历史文学')
-            logger.info(f'_recognize_loop111')
-            segment_id += 1
-            time.sleep(60)
-            logger.info(f'_recognize_loop222')
-        logger.info(f'_recognize_loop exit')
-'''
+
diff --git a/nlp/nlp_doubao.py b/nlp/nlp_doubao.py
index 5402f62..1a1af84 100644
--- a/nlp/nlp_doubao.py
+++ b/nlp/nlp_doubao.py
@@ -56,6 +56,15 @@ class DouBaoSDK:
             await self.__client.close()
         self.__client = None
 
+    def aclose(self):
+        if self._stream is not None:
+            self._stream.close()
+            self._stream = None
+        logger.info('AsyncArk close')
+        if self.__client is not None and not self.__client.is_closed():
+            self.__client.close()
+        self.__client = None
+
 
 class DouBaoHttp:
     def __init__(self, token):
@@ -111,6 +120,11 @@ class DouBaoHttp:
         if self._response is not None and self._requesting:
             self._response.close()
 
+    def aclose(self):
+        if self._response is not None and self._requesting:
+            self._response.close()
+        logger.info('DouBaoHttp close')
+
 
 class DouBao(NLPBase):
     def __init__(self, context, split, callback=None):
@@ -138,3 +152,9 @@ class DouBao(NLPBase):
         if self._dou_bao is not None:
             await self._dou_bao.close()
         logger.info('AsyncArk close')
+
+    def on_clear_cache(self, *args, **kwargs):
+        super().on_clear_cache(*args, **kwargs)
+        if self._dou_bao is not None:
+            self._dou_bao.aclose()
+        logger.info('DouBao clear_cache')
diff --git a/tts/tts_audio_handle.py b/tts/tts_audio_handle.py
index baf38ca..25d130a 100644
--- a/tts/tts_audio_handle.py
+++ b/tts/tts_audio_handle.py
@@ -18,13 +18,18 @@ class TTSAudioHandle(AudioHandler):
         self._index = -1
 
         EventBus().register('stop', self._on_stop)
+        EventBus().register('clear_cache', self.on_clear_cache)
 
     def __del__(self):
         EventBus().unregister('stop', self._on_stop)
+        EventBus().unregister('clear_cache', self.on_clear_cache)
 
     def _on_stop(self, *args, **kwargs):
         self.stop()
 
+    def on_clear_cache(self, *args, **kwargs):
+        pass
+
     @property
     def sample_rate(self):
         return self._sample_rate
@@ -73,10 +78,12 @@ class TTSAudioSplitHandle(TTSAudioHandle):
                 chunks.append(stream[idx:idx + self._chunk])
                 stream_len -= self._chunk
                 idx += self._chunk
+            if not self._is_running:
+                return
             heapq.heappush(self._priority_queue, (index, chunks))
         current = self._priority_queue[0][0]
-        print('TTSAudioSplitHandle::on_handle', index, current, self._current)
-        if current == self._current and self._is_running:
+        print('TTSAudioSplitHandle::on_handle', index, current, self._current, len(self._priority_queue))
+        if current == self._current:
             self._current = self._current + 1
             chunks = heapq.heappop(self._priority_queue)[1]
             if chunks is None:
@@ -88,6 +95,13 @@ class TTSAudioSplitHandle(TTSAudioHandle):
     def stop(self):
         self._is_running = False
 
+    def on_clear_cache(self, *args, **kwargs):
+        if self._priority_queue is None or len(self._priority_queue) == 0:
+            return
+        current = self._priority_queue[0][0]
+        self._priority_queue.clear()
+        self._current = current
+
 
 class TTSAudioSaveHandle(TTSAudioHandle):
     def __init__(self, context, handler):
diff --git a/tts/tts_base.py b/tts/tts_base.py
index 5ef0775..d6e21a3 100644
--- a/tts/tts_base.py
+++ b/tts/tts_base.py
@@ -39,10 +39,14 @@ class TTSBase(NLPCallback):
 
     async def _request(self, txt: str, index):
         # print('_request:', txt)
+        if not self._is_running:
+            logger.info('TTSBase::_request is not running')
+            return
+
         t = time.time()
         stream = await self._on_request(txt)
-        if stream is None:
-            logger.warn(f'-------stream is None')
+        if stream is None or self._is_running is False:
+            logger.warn(f'-------stream is None or is_running {self._is_running}')
             return
         logger.info(f'-------tts time:{time.time() - t:.4f}s, txt:{txt}')
         if self._handle is not None and self._is_running:
@@ -63,6 +67,9 @@ class TTSBase(NLPCallback):
         self.message(txt)
 
     def message(self, txt):
+        if not self._is_running:
+            logger.info('TTSBase::message is not running')
+            return
         txt = txt.strip()
         if len(txt) == 0:
             # logger.info(f'message is empty')