diff --git a/app/views/homework_commons/index.json.jbuilder b/app/views/homework_commons/index.json.jbuilder
index 9107c9634..daf7d9df2 100644
--- a/app/views/homework_commons/index.json.jbuilder
+++ b/app/views/homework_commons/index.json.jbuilder
@@ -17,6 +17,8 @@ json.homeworks @homework_commons.each do |homework|
   json.status_time curr_status[:time]
   json.time_status curr_status[:time_status]
   json.allow_late homework.allow_late
+  # 只有在主目录才显示
+  json.upper_category_name homework.course_second_category&.name unless params[:category]
 
   unless curr_status[:status].include?("未发布")
     json.commit_count studentwork_count homework, 1, @member