diff --git a/app/Http/Controllers/AdminController.php b/app/Http/Controllers/AdminController.php
index 1347ef41..95bfbc1b 100644
--- a/app/Http/Controllers/AdminController.php
+++ b/app/Http/Controllers/AdminController.php
@@ -214,6 +214,10 @@ class AdminController extends Controller
                 'email' => 'required|email'
             ]);
 
+            if ($users->get($request->input('email'), 'email')) {
+                return json(trans('admin.users.operations.email.existed', ['email' => $request->input('email')]), 1);
+            }
+
             $user->setEmail($request->input('email'));
 
             return json(trans('admin.users.operations.email.success'), 0);
diff --git a/app/Http/Controllers/UserController.php b/app/Http/Controllers/UserController.php
index 569f7de1..d37731a1 100644
--- a/app/Http/Controllers/UserController.php
+++ b/app/Http/Controllers/UserController.php
@@ -90,9 +90,9 @@ class UserController extends Controller
      * Handle changing user profile.
      *
      * @param  Request $request
-     * @return void
+     * @return mixed
      */
-    public function handleProfile(Request $request)
+    public function handleProfile(Request $request, UserRepository $users)
     {
         $action = $request->input('action', '');
 
@@ -129,6 +129,10 @@ class UserController extends Controller
                     'password'  => 'required|min:8|max:16'
                 ]);
 
+                if ($users->get($request->input('new_email'), 'email')) {
+                    return json(trans('user.profile.email.existed'), 1);
+                }
+
                 if (!$this->user->verifyPassword($request->input('password')))
                     return json(trans('user.profile.email.wrong-password'), 1);
 
diff --git a/resources/lang/en/admin.yml b/resources/lang/en/admin.yml
index 71394412..5a09158b 100644
--- a/resources/lang/en/admin.yml
+++ b/resources/lang/en/admin.yml
@@ -17,6 +17,7 @@ users:
     non-existent: No such user.
     email:
       change: Edit Email
+      existed: :email is existed.
       success: Email changed successfully.
     nickname:
       change: Edit Nickname
diff --git a/resources/lang/en/user.yml b/resources/lang/en/user.yml
index 761d28e6..aee3142b 100644
--- a/resources/lang/en/user.yml
+++ b/resources/lang/en/user.yml
@@ -127,6 +127,7 @@ profile:
     password: Current Password
     button: Change Email
     wrong-password: Wrong password.
+    existed: This email address is used.
     success: Email address updated successfully, please log in again.
 
   delete:
diff --git a/resources/lang/zh_CN/admin.yml b/resources/lang/zh_CN/admin.yml
index cc69049f..0896c105 100644
--- a/resources/lang/zh_CN/admin.yml
+++ b/resources/lang/zh_CN/admin.yml
@@ -17,6 +17,7 @@ users:
     non-existent: 用户不存在
     email:
       change: 修改邮箱
+      existed: :email 已被占用
       success: 邮箱修改成功
     nickname:
       change: 修改昵称
diff --git a/resources/lang/zh_CN/user.yml b/resources/lang/zh_CN/user.yml
index 19e8ffc7..3b10455e 100644
--- a/resources/lang/zh_CN/user.yml
+++ b/resources/lang/zh_CN/user.yml
@@ -134,6 +134,7 @@ profile:
     password: 当前密码
     button: 修改邮箱
     wrong-password: 密码错误
+    existed: 这个邮箱已经被别人占用啦
     success: 邮箱修改成功，请重新登录
 
   delete: