diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index 35a60f692..baa8b0d85 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -749,8 +749,8 @@ class CoursesController < ApplicationController
       ActiveRecord::Base.transaction do
         course_student.destroy!
         course_teacher.update!(is_active: 1)
+        CourseDeleteStudentDeleteWorksJob.perform_later(@course.id, [current_user.id])
       end
-      CourseDeleteStudentDeleteWorksJob.perform_later(@course.id, [current_user.id])
       normal_status(0, "切换成功")
     rescue => e
       uid_logger_error(e.message)
@@ -761,12 +761,15 @@ class CoursesController < ApplicationController
   # 切换为助教
   def switch_to_assistant
     begin
-      course_member = @course.course_members.find_by!(user_id: current_user.id, is_active: 1)
-      tip_exception("切换失败") unless course_member.STUDENT?
+      course_student = @course.course_members.find_by!(user_id: current_user.id, is_active: 1)
+      tip_exception("切换失败") unless course_student.present?
 
       course_teacher = CourseMember.find_by!(user_id: current_user.id, role: %i[ASSISTANT_PROFESSOR], course_id: @course.id)
-      course_member.update!(is_active: 0)
-      course_teacher.update!(is_active: 1)
+      ActiveRecord::Base.transaction do
+        course_student.destroy!
+        course_teacher.update!(is_active: 1)
+        CourseDeleteStudentDeleteWorksJob.perform_later(@course.id, [current_user.id])
+      end
       normal_status(0, "切换成功")
     rescue => e
       uid_logger_error(e.message)