diff --git a/Qwen_agent.py b/Qwen_agent.py
index 7b168af..8d57792 100644
--- a/Qwen_agent.py
+++ b/Qwen_agent.py
@@ -112,7 +112,10 @@ def get_product_description(std_img, track_imgs):
         }
     ]
     best_img = get_best_image(track_imgs)
-    img_list = [std_img, best_img]
+    if std_img is not None:
+        img_list = [std_img, best_img]
+    else:
+        img_list = [best_img, best_img]
     
     output_text = qwen_prompt(img_list, messages)
     contrast_pair = ast.literal_eval(output_text.strip('```python\n'))
@@ -135,8 +138,10 @@ def main():
     }
     
     track_imgs = stream_pipeline(stream_dict)
-    response = requests.get(stream_dict['goodsPic'])
-    std_img = Image.open(BytesIO(response.content))
+    std_img = None
+    if stream_dict['goodsPic'] is not None:
+        response = requests.get(stream_dict['goodsPic'])
+        std_img = Image.open(BytesIO(response.content))
     description_dict = get_product_description(std_img, track_imgs)
     print(description_dict)