diff --git a/runtime/python/websocket/funasr_wss_server_llm_multiturn.py b/runtime/python/websocket/funasr_wss_server_llm_multiturn.py
index b60e446de..cf3d34155 100644
--- a/runtime/python/websocket/funasr_wss_server_llm_multiturn.py
+++ b/runtime/python/websocket/funasr_wss_server_llm_multiturn.py
@@ -80,7 +80,8 @@ class NlsTtsSynthesizer:
         self.started = True
 
     def send_text(self, text):
-        self.sdk.sendStreamInputTts(text)
+        if len(text) > 0:
+            self.sdk.sendStreamInputTts(text)
 
     def stop(self):
         self.sdk.stopStreamInputTts()