diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index 24c296558..0cfcd5336 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -117,7 +117,7 @@ module ExercisesHelper
         #计算每个问题的答案人数
         commit_users.transaction do
           commit_users.each do |user|
-            answer_choice_array = effictive_users.select(:user_id).where(user_id:user.user_id)&.map {|s| s.exercise_choice.choice_position}.uniq
+            answer_choice_array = effictive_users.select(:user_id,:exercise_choice_id).where(user_id:user.user_id)&.map {|s| s.exercise_choice.choice_position}.uniq
             if answer_choice_array.sort == standard_answer
               right_users_count += 1
             end