diff --git a/urls/main.py b/urls/main.py
index ccc6159..9dfaea1 100644
--- a/urls/main.py
+++ b/urls/main.py
@@ -5,12 +5,12 @@ import re
 import time
 
 def natural_sort_key(s):
-    """为了自然排序的辅助函数,将字符串中的数字部分转换成整数"""
+    """为了自然排序的辅助函数，将字符串中的数字部分转换成整数"""
     return [int(text) if text.isdigit() else text.lower() for text in re.split('([0-9]+)', s)]
 
 def generate_urls(file_paths, base_url, sub_directory, min_size):
     """根据文件路径、基础URL、子目录和最小文件大小生成URL链接"""
-    urls = []
+    urls = {}
     if not base_url.endswith('/'):
         base_url += '/'
     if sub_directory and not sub_directory.endswith('/'):
@@ -23,14 +23,23 @@ def generate_urls(file_paths, base_url, sub_directory, min_size):
         relative_path = os.path.relpath(path, start='.')
         encoded_path = urllib.parse.quote(relative_path)
         url = f"{base_url}{sub_directory}{encoded_path}"
-        urls.append(f"{file_size_bytes}:{current_timestamp}:{url}")
+        dir_name = os.path.dirname(relative_path)
+        if dir_name not in urls:
+            urls[dir_name] = []
+        urls[dir_name].append(f"{file_size_bytes}:{current_timestamp}:{url}")
     return urls
 
 def save_urls(urls, output_file):
     """将URL链接保存到文本文件中"""
     with open(output_file, 'w', encoding='utf-8') as f:
-        for url in urls:
-            f.write(url + '\n')
+        for dir_name, files in urls.items():
+            if dir_name == '.':
+                for file in files:
+                    f.write(f"{file}\n")
+            else:
+                f.write(f"{dir_name}:\n")
+                for file in files:
+                    f.write(f"  {file}\n")
 
 def parse_arguments():
     """解析命令行参数"""
@@ -42,7 +51,7 @@ def parse_arguments():
     return parser.parse_args()
 
 def list_files_recursive(start_path='.', exclude_files=None):
-    """递归列出目录及其子目录中的所有文件,排除指定的文件"""
+    """递归列出目录及其子目录中的所有文件，排除指定的文件"""
     if exclude_files is None:
         exclude_files = set()
     file_paths = []