diff --git a/app/controllers/admins/shixun_settings_controller.rb b/app/controllers/admins/shixun_settings_controller.rb
index 547e31fd9..1fcac9362 100644
--- a/app/controllers/admins/shixun_settings_controller.rb
+++ b/app/controllers/admins/shixun_settings_controller.rb
@@ -83,9 +83,9 @@ class Admins::ShixunSettingsController < Admins::BaseController
       sheet1[count_row, 6] = shixun.myshixuns_count
       sheet1[count_row, 7] = shixun.myshixuns.select{|m| m.status == 1}.size
       sheet1[count_row, 8] = shixun.shixun_status
-      sheet1[count_row, 9] = shixun.user.show_real_name
-      sheet1[count_row, 10] = shixun.user.school_name
-      sheet1[count_row, 11] = shixun.user.identity
+      sheet1[count_row, 9] = shixun.user&.show_real_name
+      sheet1[count_row, 10] = shixun.user&.school_name
+      sheet1[count_row, 11] = shixun.user&.identity
       shixun.challenges.each do |challenge|
         sheet1[count_row, 12] = "第#{challenge.position}关"
         sheet1[count_row, 13] = challenge.subject