diff --git a/docutranslate/app.py b/docutranslate/app.py
index 07f2521..6326d98 100644
--- a/docutranslate/app.py
+++ b/docutranslate/app.py
@@ -2395,7 +2395,7 @@ def find_free_port(start_port):
             port += 1
 
 
-def run_app(host=None,port: int | None = None,enable_CORS=False,allow_origin_regex=r"^https?://.*$"):
+def run_app(host=None,port: int | None = None,enable_CORS=False,allow_origin_regex=r"^(https?://.*|null|file://.*)$"):
     initial_port = port or int(os.environ.get("DOCUTRANSLATE_PORT", 8010))
     try:
         port_to_use = find_free_port(initial_port)
@@ -2404,6 +2404,7 @@ def run_app(host=None,port: int | None = None,enable_CORS=False,allow_origin_reg
         print(f"正在启动 DocuTranslate WebUI 版本号：{__version__}")
         app.state.port_to_use = port_to_use
         if enable_CORS:
+            print(f"已开启跨域，allow_origin_regex：{allow_origin_regex}")
             app.add_middleware(
                 CORSMiddleware,
                 allow_origin_regex=allow_origin_regex,
diff --git a/docutranslate/cli.py b/docutranslate/cli.py
index 8bb178e..a047fe2 100644
--- a/docutranslate/cli.py
+++ b/docutranslate/cli.py
@@ -47,7 +47,7 @@ def main():
     parser.add_argument(
         "--cors-regex",
         type=str,
-        default=r"^https?://.*$",
+        default=r"^(https?://.*|null|file://.*)$",
         help="设置 CORS 允许的 Origin 正则表达式。默认为允许所有 HTTP 和 HTTPS 请求。"
     )