diff --git a/app/models/homework_common.rb b/app/models/homework_common.rb
index 332aff045..790a9b7ab 100644
--- a/app/models/homework_common.rb
+++ b/app/models/homework_common.rb
@@ -80,6 +80,11 @@ class HomeworkCommon < ApplicationRecord
     end
   end
 
+  # 实训作业的主目录信息
+  def main_category_info
+    {category_id: course.shixun_course_modules.take.try(:id), category_name: course.shixun_course_modules.take.try(:module_name)}
+  end
+
   # 根据是否统一发布获取作业的作品列表
   def all_works
     student_works = self.unified_setting ? self.student_works :
diff --git a/app/views/homework_commons/_homework_public_navigation.json.jbuilder b/app/views/homework_commons/_homework_public_navigation.json.jbuilder
index 243c6aecd..b5067e3c7 100644
--- a/app/views/homework_commons/_homework_public_navigation.json.jbuilder
+++ b/app/views/homework_commons/_homework_public_navigation.json.jbuilder
@@ -2,6 +2,7 @@ json.course_id course.id
 json.course_name course.name
 json.is_end course.is_end
 json.category homework.category_info
+json.main_category homework.main_category_info if homework.homework_type == "practice"
 member = course.course_members.find_by(user_id: user.id, is_active: 1)
 curr_status = homework_curr_status(homework, user.course_identity(course), course, member, member&.teacher_course_groups)
 json.homework_status curr_status[:status]