diff --git a/app/controller/UserController.php b/app/controller/UserController.php
index bbbc5e7..ec1f9e8 100644
--- a/app/controller/UserController.php
+++ b/app/controller/UserController.php
@@ -42,7 +42,7 @@ class UserController
 
         //验证密码
 //        if (!password_verify($userPassword, $hashedPassword)) {
-        if ($userPassword==$hashedPassword) {
+        if ($userPassword == $hashedPassword) {
             return Util::fail([], trans('password_error'));
         }
         $userId = $user['id']; // 实际从数据库获取
@@ -67,7 +67,7 @@ class UserController
      */
     public function sendCode(Request $request)
     {
-        $email = Util::getParam($request,'email');
+        $email = Util::getParam($request, 'email');
         if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
             return Util::fail([], 'email' . trans('not_null'));
         }
@@ -94,16 +94,17 @@ class UserController
      */
     public function register(Request $request)
     {
-        $email = Util::getParam($request,'email','asdf');
-        $code = Util::getParam($request,'code');
-        $sex = Util::getParam($request,'sex',0);
-        $name = Util::getParam($request,'name',0);
-        $password = Util::getParam($request,'password');
-        $mobile = Util::getParam($request,'mobile');
-        $id = Util::getParam($request,'id');
+        $email = Util::getParam($request, 'email', 'asdf');
+        $code = Util::getParam($request, 'code');
+        $sex = Util::getParam($request, 'sex', 0);
+        $name = Util::getParam($request, 'name', 0);
+        $password = Util::getParam($request, 'password');
+        $mobile = Util::getParam($request, 'mobile');
+        $id = Util::getParam($request, 'id');
+        $language = Util::getParam($request, 'language');
 
         if (!filter_var($email, FILTER_VALIDATE_EMAIL)) {
-            return Util::fail([], 'email'.$email . trans('not_null'));
+            return Util::fail([], 'email' . $email . trans('not_null'));
         }
 
         $res = User::select('id', 'email')
@@ -142,16 +143,48 @@ class UserController
             $res = User::where('id', $id)
                 ->update($data);
 //            Log::info('update', ['res' => $res]);
-            (!$res)?: $res=User::find($id)->toArray();
+            (!$res) ?: $res = User::find($id)->toArray();
         }
 
         unset($res['password']);
+        locale($language);
         if ($res) {
-            return Util::success($res,trans('register_success'));
+            return Util::success($res, trans('register_success'));
         } else {
             return Util::fail($res, trans('register_fail'));
         }
     }
 
+    /**
+     * 注册
+     * @param Request $request
+     * @return \support\Response
+     * @throws \Random\RandomException
+     */
+    public function language(Request $request)
+    {
+        $id = Util::getParam($request, 'id');
+        $language = Util::getParam($request, 'language');
+        if (Util::isEmpty($id)) {
+            return Util::fail([], 'id' . trans('not_null'));
+        }
+        if (Util::isEmpty($language)) {
+            return Util::fail([], 'language' . trans('not_null'));
+        }
+        if (!in_array($language,['en','zh_CN'])) {
+            return Util::fail([], trans('param_error'));
+        }
+        $data = [
+            'language' => $language,
+        ];
 
+        $res = User::where('id', $id)
+            ->update($data);
+        locale($language);
+        if ($res) {
+            return Util::success(null, trans('language_success'));
+        } else {
+            return Util::fail(null, trans('language_fail'));
+        }
+    }
 }
\ No newline at end of file
diff --git a/app/middleware/AuthMiddleware.php b/app/middleware/AuthMiddleware.php
index 7bd6583..c178cd9 100644
--- a/app/middleware/AuthMiddleware.php
+++ b/app/middleware/AuthMiddleware.php
@@ -70,7 +70,7 @@ class AuthMiddleware implements MiddlewareInterface
 
             $userId = $decoded->sub;
 
-            $user = User::select(['id','name','sex','role','avatar','email','password'])
+            $user = User::select(['id','name','sex','role','avatar','email','password','language'])
                 ->find($userId);
             if(!$user){
                 return Util::fail(['user'=>$user],trans('user_none'));
@@ -80,6 +80,7 @@ class AuthMiddleware implements MiddlewareInterface
             // 将用户ID存入请求对象，供后续使用
 //            $request->user = ['id' => $userId];
             $request->user = $user;
+            locale($user['language']);
             return $handler($request);
         } catch (BusinessException $e) {
             return json(['code' => 401, 'msg' => $e->getMessage()]);
diff --git a/config/translation.php b/config/translation.php
index f7790ec..d5cb67e 100644
--- a/config/translation.php
+++ b/config/translation.php
@@ -17,9 +17,9 @@
  */
 return [
     // 默认语言
-    'locale' => 'zh_CN',
+    'locale' => 'en',
     // 回退语言，当前语言中无法找到翻译时则尝试使用回退语言中的翻译
-    'fallback_locale' => ['zh_CN', 'en'],
+    'fallback_locale' => ['en', 'zh_CN'],
     // Folder where language files are stored
     'path' => base_path() . '/resource/translations',
 ];
diff --git a/resource/translations/en/messages.php b/resource/translations/en/messages.php
index cf6e2f3..2642606 100644
--- a/resource/translations/en/messages.php
+++ b/resource/translations/en/messages.php
@@ -14,4 +14,7 @@ return [
     'save_fail' => 'save fail',
     'register_success' => 'register success',
     'register_fail' => 'register fail',
+    'language_success' => 'Successfully switched languages',
+    'language_fail' => 'Language switching failed',
+    'param_error' => 'param error',
 ];
\ No newline at end of file
diff --git a/resource/translations/zh_CN/messages.php b/resource/translations/zh_CN/messages.php
index 821a680..713e9c4 100644
--- a/resource/translations/zh_CN/messages.php
+++ b/resource/translations/zh_CN/messages.php
@@ -14,4 +14,7 @@ return [
     'save_fail' => '保存失败',
     'register_success' => '注册成功',
     'register_fail' => '注册失败',
+    'language_success' => '切换语言成功',
+    'language_fail' => '切换语言失败',
+    'param_error' => '参数错误',
 ];
\ No newline at end of file