diff --git a/app/services/exercise_user_pdf_service.rb b/app/services/exercise_user_pdf_service.rb
index d76e792c4..ae90f60bf 100644
--- a/app/services/exercise_user_pdf_service.rb
+++ b/app/services/exercise_user_pdf_service.rb
@@ -80,7 +80,7 @@ class ExerciseUserPdfService
     exercise_ques_shixun = @exercise_questions.find_by_custom("question_type",5)
     @exercise_ques_shixun_count = exercise_ques_shixun.all.count
     @exercise_ques_shixun_scores = exercise_ques_shixun.pluck(:question_score).sum
-    @exercise_questions = @exercise_questions.joins(:exercise_choices,:exercise_shixun_challenges,:exercise_answers,:exercise_shixun_answers,:exercise_answer_comments,:exercise_standard_answers)
+    # @exercise_questions = @exercise_questions.joins(:exercise_choices,:exercise_shixun_challenges,:exercise_answers,:exercise_shixun_answers,:exercise_answer_comments,:exercise_standard_answers)
 
     # challenge_ids = @exercise_questions.pluck("exercise_shixun_challenges.challenge_id")