diff --git a/backend/src/main/java/ai/basic/x1/adapter/api/job/converter/ModelCocoRequestConverter.java b/backend/src/main/java/ai/basic/x1/adapter/api/job/converter/ModelCocoRequestConverter.java
index c0f462cb..b808d8aa 100644
--- a/backend/src/main/java/ai/basic/x1/adapter/api/job/converter/ModelCocoRequestConverter.java
+++ b/backend/src/main/java/ai/basic/x1/adapter/api/job/converter/ModelCocoRequestConverter.java
@@ -7,6 +7,8 @@
 
 import java.util.List;
 
+import static ai.basic.x1.util.Constants.FILE;
+
 /**
  * @author zhujh
  */
@@ -22,7 +24,13 @@ public static ImageDetectionReqDTO convert(ModelMessageBO message) {
         if (CollUtil.isEmpty(fileNodes)) {
             throw new IllegalArgumentException("file is not found");
         }
-        String url = fileNodes.get(0).getFile().getInternalUrl();
+        var fileNodeBO = fileNodes.get(0);
+        String url;
+        if (fileNodeBO.getType().equals(FILE)) {
+            url = fileNodeBO.getFile().getInternalUrl();
+        } else {
+            url = fileNodeBO.getFiles().get(0).getFile().getInternalUrl();
+        }
         if (StrUtil.isEmpty(url)) {
             throw new IllegalArgumentException("file url is empty");
         }