diff --git a/myscripts/working_tool.py b/myscripts/working_tool.py
index bce5ecb..fff0ea4 100644
--- a/myscripts/working_tool.py
+++ b/myscripts/working_tool.py
@@ -123,6 +123,16 @@ def download_and_extract(download_url, extract_dir='.', password=None):
         # 确保解压目录存在
         os.makedirs(extract_dir, exist_ok=True)
         
+        # 检查是否与最后一次下载的URL相同
+        last_upload_file = LAST_UPLOAD_FILE
+        if os.path.exists(last_upload_file):
+            with open(last_upload_file, 'r') as f:
+                last_data = json.load(f)
+            
+            if last_data.get('download_url') == download_url:
+                print(f"URL {download_url} is the same as last download. Skipping download.")
+                return True
+        
         # 下载ZIP文件到临时目录
         with tempfile.NamedTemporaryFile(suffix='.zip', delete=False) as tmp:
             zip_path = tmp.name
@@ -167,6 +177,21 @@ def download_and_extract(download_url, extract_dir='.', password=None):
                 raise e
         
         print(f"Download and extraction completed successfully.")
+        
+        # 将下载信息保存到解压目录
+        download_info = {
+            'download_url': download_url,
+            'extract_dir': extract_dir,
+            'timestamp': os.path.getmtime(zip_path),
+            'encrypted': bool(password),
+            'extracted_files': len(os.listdir(extract_dir)) if os.path.exists(extract_dir) else 0
+        }
+        
+        download_info_file = os.path.join(extract_dir, '.download_info.json')
+        with open(download_info_file, 'w') as f:
+            json.dump(download_info, f, indent=2)
+        
+        print(f"Download information saved to {download_info_file}")
         return True
     except (requests.exceptions.RequestException, zipfile.BadZipFile, IOError, Exception) as e:
         raise Exception(f"Failed to download and extract: {str(e)}")