diff --git a/app/services/admins/import_course_member_service.rb b/app/services/admins/import_course_member_service.rb
index ea8c03645..3ea559766 100644
--- a/app/services/admins/import_course_member_service.rb
+++ b/app/services/admins/import_course_member_service.rb
@@ -36,8 +36,8 @@ class Admins::ImportCourseMemberService < ApplicationService
 
     member = course.course_members.find_by(user_id: user.id, role: data.role.to_i)
     # 如果已是课堂成员且是学生身份and不在指定的分班则移动到该分班
-    if member.present? && member.role == 'STUDENT' && course_group && member.course_group_id != course_group&.id
-      member.update!(course_group_id: course_group&.id)
+    if member.present? && member.role == 'STUDENT' && course_group && member.course_group_id != course_group&.id.to_i
+      member.update!(course_group_id: course_group&.id.to_i)
     elsif member.blank?
       course.course_members.create!(user_id: user.id, role: data.role.to_i, course_group_id: course_group&.id.to_i)
       extra =