diff --git a/library/think/response.php b/library/think/response.php
index db605bb8..173ec782 100644
--- a/library/think/response.php
+++ b/library/think/response.php
@@ -209,7 +209,7 @@ class Response
      */
     public static function redirect($url, $params = [])
     {
-        $http_response_code     = 302;
+        $http_response_code     = 301;
         if(in_array($params, [301, 302])){
             $http_response_code = $params;
             $params             = [];