diff --git a/app/models/issue.rb b/app/models/issue.rb
index 08c676b00..11f62b92e 100644
--- a/app/models/issue.rb
+++ b/app/models/issue.rb
@@ -106,6 +106,7 @@ class Issue < ApplicationRecord
   scope :closed, ->{where(status_id: 5)}
   scope :opened, ->{where.not(status_id: 5)}
   scope :with_assigner_info, -> {
+    select("DISTINCT issues.*, u.id AS user_id, CONVERT(COALESCE(u.nickname, u.login) USING gbk) AS user_name").
     joins("LEFT JOIN (
       SELECT ia.issue_id, ia.assigner_id
       FROM issue_assigners ia
@@ -120,7 +121,7 @@ class Issue < ApplicationRecord
   
   scope :ordered_by_assigner, -> (sort_direction) {
     order("CASE WHEN u.id IS NULL THEN 1 ELSE 0 END ASC")
-    .order("COALESCE(u.nickname, u.login) #{sort_direction}")
+    .order("CONVERT(COALESCE(u.nickname, u.login) USING gbk) #{sort_direction}")
   }
   after_create :incre_project_common, :incre_user_statistic, :incre_platform_statistic
   before_save :check_pm_and_update_due_date