diff --git a/app/helpers/exercise_helper.rb b/app/helpers/exercise_helper.rb
index 513f27c16..cdfdf4abb 100644
--- a/app/helpers/exercise_helper.rb
+++ b/app/helpers/exercise_helper.rb
@@ -8,7 +8,7 @@ module ExerciseHelper
 
   #判断用户是否已经提交了问卷
   def has_commit_exercise?(exercise_id, user_id)
-    pu = ExerciseUser.find_by_excercise_id_and_user_id(exercise_id, user_id)
+    pu = ExerciseUser.find_by_exercise_id_and_user_id(exercise_id, user_id)
     if pu.nil?
       false
     else