diff --git a/pkg/errs/database.go b/pkg/errs/database.go
index b531be47..170257a2 100644
--- a/pkg/errs/database.go
+++ b/pkg/errs/database.go
@@ -5,7 +5,8 @@ import (
 )
 
 var (
-	ErrDatabaseTypeInvalid = NewSystemError(SYSTEM_SUBCATEGORY_DATABASE, 0, http.StatusInternalServerError, "database type is invalid")
-	ErrDatabaseHostInvalid = NewSystemError(SYSTEM_SUBCATEGORY_DATABASE, 1, http.StatusInternalServerError, "database host is invalid")
-	ErrDatabaseIsNull      = NewSystemError(SYSTEM_SUBCATEGORY_DATABASE, 2, http.StatusInternalServerError, "database cannot be null")
+	ErrDatabaseTypeInvalid     = NewSystemError(SYSTEM_SUBCATEGORY_DATABASE, 0, http.StatusInternalServerError, "database type is invalid")
+	ErrDatabaseHostInvalid     = NewSystemError(SYSTEM_SUBCATEGORY_DATABASE, 1, http.StatusInternalServerError, "database host is invalid")
+	ErrDatabaseIsNull          = NewSystemError(SYSTEM_SUBCATEGORY_DATABASE, 2, http.StatusInternalServerError, "database cannot be null")
+	ErrDatabaseOperationFailed = NewSystemError(SYSTEM_SUBCATEGORY_DATABASE, 3, http.StatusInternalServerError, "database operation failed")
 )
diff --git a/pkg/services/users.go b/pkg/services/users.go
index 2cdee866..5dfd8b32 100644
--- a/pkg/services/users.go
+++ b/pkg/services/users.go
@@ -157,6 +157,14 @@ func (s *UserService) UpdateUser(user *models.User) (keyProfileUpdated bool, err
 	keyProfileUpdated = false
 
 	if user.Email != "" {
+		exists, err := s.ExistsEmail(user.Email)
+
+		if err != nil {
+			return false, err
+		} else if exists {
+			return false, errs.ErrUserEmailAlreadyExists
+		}
+
 		user.EmailVerified = false
 
 		updateCols = append(updateCols, "email")
@@ -184,6 +192,10 @@ func (s *UserService) UpdateUser(user *models.User) (keyProfileUpdated bool, err
 	err = s.UserDB().DoTransaction(func(sess *xorm.Session) error {
 		updatedRows, err := sess.ID(user.Uid).Where("deleted=?", false).Cols(updateCols...).Update(user)
 
+		if err != nil {
+			return errs.ErrDatabaseOperationFailed
+		}
+
 		if updatedRows < 1 {
 			return errs.ErrUserNotFound
 		}
diff --git a/src/locales/en.js b/src/locales/en.js
index a1df2aeb..782286fb 100644
--- a/src/locales/en.js
+++ b/src/locales/en.js
@@ -174,6 +174,7 @@ export default {
     'error': {
         'system error': 'System Error',
         'api not found': 'Failed to request api',
+        'database operation failed': 'Database operation failed',
         'incomplete or incorrect submission': 'Incomplete or incorrect submission',
         'operation failed': 'Operation failed',
         'nothing will be updated': 'Nothing will be updated',
diff --git a/src/locales/zh_Hans.js b/src/locales/zh_Hans.js
index d2d8f976..cde4f159 100644
--- a/src/locales/zh_Hans.js
+++ b/src/locales/zh_Hans.js
@@ -174,6 +174,7 @@ export default {
     'error': {
         'system error': '系统错误',
         'api not found': '接口调用失败',
+        'database operation failed': '数据库操作失败',
         'incomplete or incorrect submission': '提交不完整或不正确',
         'operation failed': '操作失败',
         'nothing will be updated': '没有内容更新',