diff --git a/app/Http/Controllers/AdminController.php b/app/Http/Controllers/AdminController.php
index 71f0d8a1..f75a5df7 100644
--- a/app/Http/Controllers/AdminController.php
+++ b/app/Http/Controllers/AdminController.php
@@ -227,8 +227,13 @@ class AdminController extends Controller
         $action = $request->input('action');
         $user   = $users->get($request->input('uid'));
 
-        if (!$user)
+        if (! $user) {
             return json(trans('admin.users.operations.non-existent'), 1);
+        }
+
+        if ($user->permission >= app('user.current')->permission) {
+            return json(trans('admin.users.operations.no-permission'), 1);
+        }
 
         if ($action == "email") {
             $this->validate($request, [
@@ -250,7 +255,9 @@ class AdminController extends Controller
 
             $user->setNickName($request->input('nickname'));
 
-            return json(trans('admin.users.operations.nickname.success', ['new' => $request->input('nickname')]), 0);
+            return json(trans('admin.users.operations.nickname.success', [
+                'new' => $request->input('nickname')
+            ]), 0);
 
         } elseif ($action == "password") {
             $this->validate($request, [
@@ -271,13 +278,6 @@ class AdminController extends Controller
             return json(trans('admin.users.operations.score.success'), 0);
 
         } elseif ($action == "ban") {
-            if ($user->getPermission() == User::ADMIN) {
-                if (app('user.current')->getPermission() != User::SUPER_ADMIN)
-                    return json(trans('admin.users.operations.ban.cant-admin'));
-            } elseif ($user->getPermission() == User::SUPER_ADMIN) {
-                return json(trans('admin.users.operations.ban.cant-super-admin'));
-            }
-
             $permission = $user->getPermission() == User::BANNED ? User::NORMAL : User::BANNED;
 
             $user->setPermission($permission);
@@ -289,12 +289,6 @@ class AdminController extends Controller
             ]);
 
         } elseif ($action == "admin") {
-            if (app('user.current')->getPermission() != User::SUPER_ADMIN)
-                return json(trans('admin.users.operations.admin.cant-set'));
-
-            if ($user->getPermission() == User::SUPER_ADMIN)
-                return json(trans('admin.users.operations.admin.cant-unset'));
-
             $permission = $user->getPermission() == User::ADMIN ? User::NORMAL : User::ADMIN;
 
             $user->setPermission($permission);
@@ -321,8 +315,13 @@ class AdminController extends Controller
 
         $player = Player::find($request->input('pid'));
 
-        if (!$player)
+        if (! $player) {
             abort(404, trans('general.unexistent-player'));
+        }
+
+        if ($player->user->permission >= app('user.current')->permission) {
+            return json(trans('admin.players.no-permission'), 1);
+        }
 
         if ($action == "preference") {
             $this->validate($request, [
diff --git a/resources/lang/en/admin.yml b/resources/lang/en/admin.yml
index 9ba256e7..153f9858 100644
--- a/resources/lang/en/admin.yml
+++ b/resources/lang/en/admin.yml
@@ -17,6 +17,7 @@ users:
   operations:
     title: Operations
     non-existent: No such user.
+    no-permission: You have no permission to operate this user.
     email:
       change: Edit Email
       existed: :email is existed.
@@ -36,8 +37,6 @@ users:
       unset:
         text: Remove Admin
         success: The account's admin privilege has been removed.
-      cant-set: Only super admins can do the operation
-      cant-unset: Can't remove super admin privilege
     ban:
       ban:
         text: Ban
@@ -54,6 +53,7 @@ users:
       cant-admin: You can't delete admins.
 
 players:
+  no-permission: You have no permission to operate this player.
   operations:
     title: Operations
   preference:
diff --git a/resources/lang/zh_CN/admin.yml b/resources/lang/zh_CN/admin.yml
index a509be62..37cf113d 100644
--- a/resources/lang/zh_CN/admin.yml
+++ b/resources/lang/zh_CN/admin.yml
@@ -17,6 +17,7 @@ users:
   operations:
     title: 更多操作
     non-existent: 用户不存在
+    no-permission: 你无权操作此用户
     email:
       change: 修改邮箱
       existed: :email 已被占用
@@ -36,8 +37,6 @@ users:
       unset:
         text: 解除管理员
         success: 账号已被解除管理员
-      cant-set: 非超级管理员无法进行此操作
-      cant-unset: 无法解除超级管理员
     ban:
       ban:
         text: 封禁
@@ -54,6 +53,7 @@ users:
       cant-admin: 你不能删除管理员账号哦
 
 players:
+  no-permission: 你无权操作此角色
   operations:
     title: 更多操作
   preference: