diff --git a/app/controllers/wechats_controller.rb b/app/controllers/wechats_controller.rb
index ef935c597..38bff250e 100644
--- a/app/controllers/wechats_controller.rb
+++ b/app/controllers/wechats_controller.rb
@@ -211,17 +211,8 @@ class WechatsController < ActionController::Base
     #取出用户角色类型
     role = 10
 
-    case user.user_extensions.identity
-      when 0
-        role = "9"
-      when 1
-        role = "10"
-      when 2
-        role = "7"
-    end
-
     cs = CoursesService.new
-    status = cs.join_course({role:role,invite_code: course.invite_code}, user)
+    status = cs.join_course({invite_code: course.invite_code}, user)
     logger.info status
     if status[:state] != 0
       raise CoursesService::JoinCourseError.message(status[:state])
diff --git a/app/services/courses_service.rb b/app/services/courses_service.rb
index fe23dc377..7ef08f6d8 100644
--- a/app/services/courses_service.rb
+++ b/app/services/courses_service.rb
@@ -354,54 +354,27 @@ class CoursesService
           roleName = member.roles[0].name if member
           if params[:invite_code].present?
             #如果加入角色为学生 并且当前是学生
-            if params[:role] == "10" && roleName == "Student"
+            if roleName == "Student"
               @state = 3
               #如果加入的角色为老师，并且当前已经是老师
-            elsif params[:role] == "9" && roleName == "Teacher"
+            elsif roleName == "Teacher"
               @state = 8
               #如果加入的角色教辅并且当前为教辅
-            elsif params[:role] == "7" && roleName == "TeachingAsistant"
+            elsif roleName == "TeachingAsistant"
               @state = 9
             elsif roleName == "Manager"
               @state = 10
-              #如果加入角色为教师或者教辅，并且当前是学生，或者是要成为教辅，当前不是教辅，或者要成为教师，当前不是教师。那么要发送请求
-            elsif (params[:role] != "10" && roleName == "Student") || (params[:role] == "7" && roleName != "TeachingAsistant" ) || (params[:role] == "9" && roleName != "Teacher" )
-              #如果已经发送过消息了，那么就要给个提示
-              if CourseMessage.where("course_message_type = 'JoinCourseRequest' and user_id = #{course.tea_id} and course_message_id = #{User.current.id} and course_id = #{course.id} and status = 0 ").count != 0
-                @state = 7
-              else
-                Mailer.run.join_course_request(course, User.current, params[:role])
-                CourseMessage.create(:user_id => course.tea_id, :course_id => course.id, :viewed => false,:content=> params[:role],:course_message_id=>User.current.id,:course_message_type=>'JoinCourseRequest',:status=>0)
-                @state = 6
-              end
-              #如果加入角色是学生，但是是当前课程的教师或者教辅
-            elsif params[:role] == "10" && roleName != "Student"
-              member.role_ids = [params[:role]]
-              member.save
-              StudentsForCourse.create(:student_id => current_user.id, :course_id => course.id)
-              @state = 0
             end
           else
             @state = 1
           end
         else
           if params[:invite_code].present?
-            if params[:role] == "10" || params[:role] == nil
               members = []
               members << Member.new(:role_ids => [10], :user_id => current_user.id)
               course.members << members
               StudentsForCourse.create(:student_id => current_user.id, :course_id => course.id)
               @state = 0
-            else
-              #如果已经发送过消息了，那么就要给个提示
-              if CourseMessage.where("course_message_type = 'JoinCourseRequest' and user_id = #{course.tea_id} and content = #{params[:role]} and course_message_id = #{User.current.id} and course_id = #{course.id} and status = 0").count != 0
-                @state = 7
-              else
-                Mailer.run.join_course_request(course, User.current, params[:role])
-                CourseMessage.create(:user_id => course.tea_id, :course_id => course.id, :viewed => false,:content=> params[:role],:course_message_id=>User.current.id,:course_message_type=>'JoinCourseRequest',:status=>0)
-                @state = 6
-              end
-            end
           else
             @state = 1
           end