diff --git a/voice/pytts/pytts_voice.py b/voice/pytts/pytts_voice.py
index 57d0cfb..968286c 100644
--- a/voice/pytts/pytts_voice.py
+++ b/voice/pytts/pytts_voice.py
@@ -13,9 +13,9 @@ from voice.voice import Voice
 import os
 
 class PyttsVoice(Voice):
-    engine = pyttsx3.init()
 
     def __init__(self):
+        self.engine = pyttsx3.init()
         # 语速
         self.engine.setProperty("rate", 125)
         # 音量
@@ -23,25 +23,24 @@ class PyttsVoice(Voice):
         for voice in self.engine.getProperty("voices"):
             if "Chinese" in voice.name:
                 self.engine.setProperty("voice", voice.id)
-
         self.engine.setProperty("voice", "zh")
+        self.engine.startLoop(useDriverLoop=False)
 
     def textToVoice(self, text):
         try:
-            mp3FileName = "reply-" + str(int(time.time())) + ".mp3"
+            mp3FileName = "reply-" + str(int(time.time()*100)) + ".mp3"
             mp3File = TmpDir().path() + mp3FileName
-            self.engine.save_to_file(text, mp3File)
-            self.engine.runAndWait()
-
-            # engine.runAndWait() will return before the file created
-            while mp3FileName not in os.listdir(TmpDir().path()):
-                time.sleep(0.1)
-
             logger.info(
                 "[Pytts] textToVoice text={} voice file name={}".format(text, mp3File)
             )
+            self.engine.save_to_file(text, mp3File)
+            self.engine.iterate()
+            while self.engine.isBusy() or mp3FileName not in os.listdir(TmpDir().path()):
+                time.sleep(0.1)
+            logger.debug("[Pytts] Task finished")
             reply = Reply(ReplyType.VOICE, mp3File)
         except Exception as e:
+            print(e)
             reply = Reply(ReplyType.ERROR, str(e))
         finally:
             return reply