diff --git a/src/routers/deep_agent_chat.py b/src/routers/deep_agent_chat.py
index 704f2f6..e4881f9 100644
--- a/src/routers/deep_agent_chat.py
+++ b/src/routers/deep_agent_chat.py
@@ -148,7 +148,7 @@ async def chat_stream(request: DeepAgentChatRequest):
                 files["input_image"].append(path)
 
         # 用户引用图片
-        if len(request.quote_image_path):
+        if request.quote_image_path:
             bucket, object_name = request.quote_image_path.split('/', 1)
             image_url = get_presigned_url(oss_client=minio_client, bucket=bucket, object_name=object_name)
             content.append({"type": "image_url", "image_url": {"url": image_url}})