diff --git a/app/controllers/exercise_questions_controller.rb b/app/controllers/exercise_questions_controller.rb
index 3718e18d5..52915a8ba 100644
--- a/app/controllers/exercise_questions_controller.rb
+++ b/app/controllers/exercise_questions_controller.rb
@@ -339,10 +339,11 @@ class ExerciseQuestionsController < ApplicationController
           @exercise_question.exercise_shixun_challenges.each_with_index do |challenge, index|
             challenge.question_score = params[:question_scores][index].to_f.round(1)
             challenge.save
-            question_score += challenge.question_score
+            question_score += params[:question_scores][index].to_f.round(1)
           end
           @exercise_question.question_score = question_score
           @exercise_question.shixun_name = shixun_name
+          @exercise_question.save
         end
 
         #当试卷已发布时（试卷的总状态),当标准答案修改时，如有已提交的学生，需重新计算分数.