diff --git a/app/controllers/exercise_questions_controller.rb b/app/controllers/exercise_questions_controller.rb
index 27e3fa2f4..dc80bccf0 100644
--- a/app/controllers/exercise_questions_controller.rb
+++ b/app/controllers/exercise_questions_controller.rb
@@ -515,7 +515,15 @@ class ExerciseQuestionsController < ApplicationController
             else # 新多选题只需取第一条答题记录的得分
               ex_answer_old = ex_answers.first.score > 0 ? ex_answers.first.score : 0
             end
+            ex_answers.update_all(:score => @c_score)   #所有的正确选项需重新更新
           else
+            answer_option = {
+              :user_id => @user_id,
+              :exercise_question_id => @exercise_question.id,
+              :score => @c_score,
+              :answer_text => ""
+            }
+            ExerciseAnswer.create(answer_option)
             ex_answer_old = 0
           end
 
@@ -526,12 +534,24 @@ class ExerciseQuestionsController < ApplicationController
             :score => total_scores
           }
           @exercise_current_user.update_attributes(ex_scores)
-          ex_answers.update_all(:score => @c_score)   #所有的正确选项需重新更新
 
         elsif @exercise_question.question_type == Exercise::COMPLETION  #当为填空题，更新问题的总分,
-          ex_answer_old = ex_answers.score_reviewed.pluck(:score).sum  #每一关的得分总和
-          each_right_score = (@c_score / ex_answers.count.to_f)   #调分后，平均每关的分数
-          new_obj_score = ex_obj_score - ex_answer_old + @c_score
+
+          if ex_answers.exists?
+            ex_answer_old = ex_answers.score_reviewed.pluck(:score).sum  #每一关的得分总和
+            each_right_score = (@c_score / ex_answers.count.to_f)   #调分后，平均每关的分数
+            new_obj_score = ex_obj_score - ex_answer_old + @c_score
+          else   #如果学生未答，则创建新的答题记录
+            answer_option = {
+              :user_id => @user_id,
+              :exercise_question_id => @exercise_question.id,
+              :score => @c_score,
+              :answer_text => ""
+            }
+            ExerciseAnswer.create(answer_option)
+            new_obj_score = ex_subj_score + @c_score
+          end
+
           total_scores = new_obj_score + ex_subj_score
           ex_scores = {
               :objective_score => new_obj_score,