diff --git a/app/main.py b/app/main.py
index 234fa2b..6992310 100644
--- a/app/main.py
+++ b/app/main.py
@@ -164,7 +164,7 @@ def generateqr(url="http://nomad.hackrobot.cn",
     group_image.paste(qr_image, qr_position)
 
     # 保存合成的图像
-    combined_image_path = f"images/combined_{wxid}.jpg"
+    combined_image_path = f"images/combined_{wxid}_{datetime.now()}.jpg"
     group_image.save(combined_image_path)
     # 压缩图片
     group_image.save(combined_image_path, "JPEG",