diff --git a/app/views/homework_commons/group_list.json.jbuilder b/app/views/homework_commons/group_list.json.jbuilder
index dcc04e761..5e6c63556 100644
--- a/app/views/homework_commons/group_list.json.jbuilder
+++ b/app/views/homework_commons/group_list.json.jbuilder
@@ -8,10 +8,13 @@ json.group_list do
 end
 # 未分班展示情况放在最后
 if @course_groups.count < @limit.to_i
-  json.ungroup_list do
-    json.id 0
-    json.name "未分班"
-    json.work_count homework_ungroup_works_count @homework, @ungroup_user_ids
-    json.last_review_time ungroup_last_review_time @homework
+  ungroup_work_count = homework_ungroup_works_count(@homework, @ungroup_user_ids)
+  if ungroup_work_count > 0
+    json.ungroup_list do
+      json.id 0
+      json.name "未分班"
+      json.work_count ungroup_work_count
+      json.last_review_time ungroup_last_review_time @homework
+    end
   end
 end
\ No newline at end of file