diff --git a/dsLightRag/Routes/QA.py b/dsLightRag/Routes/QA.py
index 356a46f5..411ce01b 100644
--- a/dsLightRag/Routes/QA.py
+++ b/dsLightRag/Routes/QA.py
@@ -169,7 +169,7 @@ async def chat(request: fastapi.Request):
                 async for chunk in stream:
                     if chunk.choices[0].delta.content:
                         full_answer.append(chunk.choices[0].delta.content)
-                        yield f"data: {json.dumps({'reply': chunk.choices[0].delta.content}, ensure_ascii=False)}\n\n"
+                        yield f"data: {json.dumps({'reply': chunk.choices[0].delta.content.replace('$ ', '$').replace(' $', '$'), 'session_id': session_id}, ensure_ascii=False)}\n\n"
 
                 # 保存回答到ES和对话历史
                 if full_answer: