diff --git a/frontend/src/api_client.py b/frontend/src/api_client.py
index c8d4697..499c375 100644
--- a/frontend/src/api_client.py
+++ b/frontend/src/api_client.py
@@ -149,7 +149,7 @@ class APIClient:
                 f"{self.base_url}/chat/stream",
                 json=payload,
                 stream=True,
-                timeout=config.stream_timeout
+                timeout=(30, None)  # 连接超时30秒，读取不超时
             ) as response:
                 if response.status_code != 200:
                     yield {