diff --git a/app/controllers/student_works_controller.rb b/app/controllers/student_works_controller.rb
index 309c8b379..92d146c82 100644
--- a/app/controllers/student_works_controller.rb
+++ b/app/controllers/student_works_controller.rb
@@ -334,6 +334,7 @@ class StudentWorksController < ApplicationController
     ActiveRecord::Base.transaction do
       begin
         # 没传score则取上次评分成绩
+        reviewer_role = @user_course_identity == Course::STUDENT ? 3 : @user_course_identity == Course::ASSISTANT_PROFESSOR ? 2 : 1
         new_score = StudentWorksScore.new
         score = StudentWorksScore.where(user_id: current_user.id, student_work_id: @work.id, reviewer_role: reviewer_role).last
         new_score.score = params[:score].blank? ? score.try(:score) : params[:score].to_f
@@ -348,7 +349,6 @@ class StudentWorksController < ApplicationController
           @work.update_attributes(group_id: @homework.max_group_id) if @homework.homework_type == "group"
         end
 
-        reviewer_role = @user_course_identity == Course::STUDENT ? 3 : @user_course_identity == Course::ASSISTANT_PROFESSOR ? 2 : 1
         new_score.reviewer_role = reviewer_role
 
         if new_score.save!