diff --git a/app/api/mobile/apis/courses.rb b/app/api/mobile/apis/courses.rb
index b5af07a09..a42ebd470 100644
--- a/app/api/mobile/apis/courses.rb
+++ b/app/api/mobile/apis/courses.rb
@@ -569,14 +569,20 @@ module Mobile
             roles_id << 10
           end
 
-
           c = Course.find("#{params[:id]}")
 
-          #7教辅 9教师 10学生
-          if c.tea_id == params[:user_id] || c.tea_id != current_user.id  || roles_id.length <= 0
-            present :status, -1
-          else
+          my_member = c.member_principals.where("users.id=#{current_user.id}").first
 
+          rolesids = []
+          my_member.roles.each do |role|
+            rolesids << role.id
+          end
+
+          #7教辅 9教师 10学生
+          if c.tea_id == params[:user_id] || roles_id.length <= 0 || rolesids.include?(10)
+            present :status, -1
+            present :message,"修改失败"
+          else
             cs = CoursesService.new
             status = cs.modify_user_course_role params,roles_id
             present :status, status