diff --git a/app/controllers/challenges_controller.rb b/app/controllers/challenges_controller.rb
index ebce98b62..9e87d3799 100644
--- a/app/controllers/challenges_controller.rb
+++ b/app/controllers/challenges_controller.rb
@@ -151,7 +151,7 @@ class ChallengesController < ApplicationController
   def index
     uid_logger("identifier: #{params}")
 
-    @challenges = Challenge.fields_for_list.where(shixun_id: @shixun.id)
+    @challenges = @shixun.challenges.fields_for_list
 
     @editable = @shixun.status == 0 # before_action：有判断权限，如果没发布，则肯定是管理人员
     @user = current_user