diff --git a/src/main/java/com/ai/da/service/impl/LLMServiceImpl.java b/src/main/java/com/ai/da/service/impl/LLMServiceImpl.java
index 0e410777..af8cc65f 100644
--- a/src/main/java/com/ai/da/service/impl/LLMServiceImpl.java
+++ b/src/main/java/com/ai/da/service/impl/LLMServiceImpl.java
@@ -89,7 +89,7 @@ public class LLMServiceImpl implements LLMService {
                     jsonBodyObject.put("role", "user");
                     jsonBodyObject.put("image", !CollectionUtils.isEmpty(imageUrlList) ? imageUrlList : null); // 可扩展
 //                    jsonBodyObject.put("image", ""); // 可扩展
-                    jsonBodyObject.put("file", fileUrl != null ? Collections.singletonList(fileUrl) : null);
+                    jsonBodyObject.put("file", !StringUtils.isEmpty(fileUrl) ? Collections.singletonList(fileUrl) : null);
                     jsonBodyObject.put("message", prompt);
                     jsonBodyObject.put("enable_thinking", enableThinking);