diff --git a/app/controllers/subjects_controller.rb b/app/controllers/subjects_controller.rb
index 864c2c426..64ea7f50d 100644
--- a/app/controllers/subjects_controller.rb
+++ b/app/controllers/subjects_controller.rb
@@ -282,7 +282,7 @@ class SubjectsController < ApplicationController
   # 删除实训
   # DELETE: /api/subejcts/:id/delete_member
   def delete_member
-    tip_exception(403, "没权限操作") if !current_user.admin?
+    tip_exception(403, "没权限操作") unless current_user.creator_of_subject?(@subject)
     tip_exception('用户id不能为空') if params[:user_id].blank?
     user = @subject.subject_members.where(:user_id => params[:user_id], :role => 2).first
     tip_exception("管理员用户不允许删除,或用户不存在") if user.blank?
diff --git a/app/views/subjects/up_member_position.json.jbuilder b/app/views/subjects/up_member_position.json.jbuilder
index 410b5641b..64038f419 100644
--- a/app/views/subjects/up_member_position.json.jbuilder
+++ b/app/views/subjects/up_member_position.json.jbuilder
@@ -1,3 +1,4 @@
 json.members @subject.subject_members do |member|
   json.partial! 'subject_member', locals: { user: member.user }
+  json.role member.role
 end
\ No newline at end of file