diff --git a/app/models/exercise.rb b/app/models/exercise.rb
index 825f7cd9f..8469d25b6 100644
--- a/app/models/exercise.rb
+++ b/app/models/exercise.rb
@@ -131,7 +131,7 @@ class Exercise < ApplicationRecord
       status = 4
     else
       if user.present? && user.student_of_course?(course)   #当为学生的时候,需根据分班来判断试卷状态
-        ex_time = get_exercise_times(user_id,false)
+        ex_time = get_exercise_times(user.id,false)
         pb_time = ex_time[:publish_time]
         ed_time = ex_time[:end_time]
         if pb_time.present? && ed_time.present? && pb_time <= Time.now && ed_time > Time.now