diff --git a/app/services/courses_service.rb b/app/services/courses_service.rb
index de72cab7c..a96bc0fbe 100644
--- a/app/services/courses_service.rb
+++ b/app/services/courses_service.rb
@@ -434,7 +434,7 @@ class CoursesService
     many_times = course.homeworks.index(bid) + 1
     name = bid.name
     homework_count = bid.homeworks.count  #已提交的作业数量
-    student_questions_count = bid.commit.nil? ? 0 : bid.commit
+    student_questions_count = bid.journals_for_messages.where('m_parent_id IS NULL').count
     description = bid.description
     #if is_course_teacher(User.current, course) && @bid.open_anonymous_evaluation == 1 && @bid.homeworks.count >= 2
     state = bid.comment_status
@@ -454,7 +454,7 @@ class CoursesService
     many_times = course.homeworks.index(bid) + 1
     name = bid.name
     homework_count = bid.homeworks.count  #已提交的作业数量
-    student_questions_count = bid.commit.nil? ? 0 : bid.commit
+    student_questions_count = bid.journals_for_messages.where('m_parent_id IS NULL').count
     description = bid.description
                                           #if is_course_teacher(User.current, course) && @bid.open_anonymous_evaluation == 1 && @bid.homeworks.count >= 2
     state = bid.comment_status