diff --git a/app/common/middleware/AllowCrossDomain.php b/app/common/middleware/AllowCrossDomain.php
index 2a862821..4ecb9663 100644
--- a/app/common/middleware/AllowCrossDomain.php
+++ b/app/common/middleware/AllowCrossDomain.php
@@ -55,6 +55,10 @@ public function handle(Request $request, Closure $next, ?array $header = []): Re
             }
         }
 
+        if ($request->isOptions()) {
+            return response('', 204, $header);
+        }
+
         $request->allowCrossDomainHeaders = $header;
 
         return $next($request)->header($header);
diff --git a/public/index.php b/public/index.php
index 5468af68..403b65f6 100644
--- a/public/index.php
+++ b/public/index.php
@@ -12,23 +12,13 @@
 // [ 应用入口文件 ]
 namespace think;
 
-/*
- * 不在tp加载后判断，为了安全的使用exit()
- * 使用绝对路径，确保花里胡哨的url均能正确判定和跳转
- */
-if ($_SERVER['REQUEST_METHOD'] == 'OPTIONS') {
-    header("Access-Control-Allow-Credentials: true");
-    header("Access-Control-Max-Age: 86400");
-    header("Access-Control-Allow-Methods: GET, POST, PATCH, PUT, DELETE, OPTIONS");
-    header("Access-Control-Allow-Headers: " . $_SERVER['HTTP_ACCESS_CONTROL_REQUEST_HEADERS']);
-    header("Access-Control-Allow-Origin: *");
-    exit();
-}
-
-$rootPath = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR;
-$server   = isset($_REQUEST['server']) || isset($_SERVER['HTTP_SERVER']) || substr($_SERVER['REQUEST_URI'], 1, 9) == 'index.php';
+$server = isset($_REQUEST['server']) || isset($_SERVER['HTTP_SERVER']) || substr($_SERVER['REQUEST_URI'], 1, 9) == 'index.php' || $_SERVER['REQUEST_METHOD'] == 'OPTIONS';
 if (!$server) {
-    // 用户访问前端
+    /*
+     * 用户访问前端
+     * 不在tp加载后判断，为了安全的使用 exit()（常驻内存运行时不走本文件）
+     */
+    $rootPath = $_SERVER['DOCUMENT_ROOT'] . DIRECTORY_SEPARATOR;
 
     // 安装检测-s
     if (!is_file($rootPath . 'install.lock') && is_file($rootPath . 'install' . DIRECTORY_SEPARATOR . 'index.html')) {
@@ -37,10 +27,7 @@
     }
     // 安装检测-e
 
-    /*
-     * 检测是否已编译前端-s
-     * 如果存在 index.html 则访问 index.html
-     */
+    // 检测是否已编译前端（如果存在 index.html，则访问）-s
     if (is_file($rootPath . 'index.html')) {
         header("location:" . DIRECTORY_SEPARATOR . 'index.html');
         exit();