diff --git a/app/helpers/exercises_helper.rb b/app/helpers/exercises_helper.rb
index 8406a1c00..b23c03210 100644
--- a/app/helpers/exercises_helper.rb
+++ b/app/helpers/exercises_helper.rb
@@ -213,10 +213,10 @@ module ExercisesHelper
         percent = (ex_total_score == 0.0 ? 0.0 : (answer_user_score / ex_total_score.to_f).round(3) * 100)  #正确率
 
         # percent = commit_user_ids > 0 ? (all_user_count / commit_user_ids.to_f).round(3)*100 : 0.0
-        user_right_count = effictive_users.where("score > 0.0").pluck(:user_id).uniq
-        unanswer_user_count = effictive_users.where("score < 0.0 and answer_text is null or answer_text = ''").pluck(:user_id).uniq
-        user_wrong_counts = effictive_users.where("score < 0.0 and answer_text is not null and answer_text != ''").pluck(:user_id).uniq
-        user_wrong_count = (user_wrong_counts - user_right_count - unanswer_user_count).size
+        # user_right_count = effictive_users.where("score > 0.0").pluck(:user_id).uniq
+        # unanswer_user_count = effictive_users.where("score < 0.0 and answer_text is null or answer_text = ''").pluck(:user_id).uniq
+        user_wrong_count = effictive_users.where("score < 0.0 and (answer_text is null or answer_text = '')").pluck(:user_id).uniq.size
+        # user_wrong_count = (user_wrong_counts - user_right_count - unanswer_user_count).size
 
         if effictive_users_count > 0 && user_wrong_count >= 0
           wrong_percent =  (user_wrong_count / effictive_users_count.to_f ).round(3)