diff --git a/app/controllers/admins/shixun_settings_controller.rb b/app/controllers/admins/shixun_settings_controller.rb
index 1fcac9362..fd06fddb3 100644
--- a/app/controllers/admins/shixun_settings_controller.rb
+++ b/app/controllers/admins/shixun_settings_controller.rb
@@ -112,9 +112,9 @@ class Admins::ShixunSettingsController < Admins::BaseController
       sheet1[count_row, 2] = shixun.mirror_repositories.select{|mr| mr.main_type == "1"}.first&.type_name
       sheet1[count_row, 3] = shixun.fork_from
       sheet1[count_row, 4] = shixun.shixun_status
-      sheet1[count_row, 5] = shixun.user.show_real_name
-      sheet1[count_row, 6] = shixun.user.school_name
-      sheet1[count_row, 7] = shixun.user.identity
+      sheet1[count_row, 5] = shixun.user&.show_real_name
+      sheet1[count_row, 6] = shixun.user&.school_name
+      sheet1[count_row, 7] = shixun.user&.identity
       challenge_count = shixun.challenges.count
       shixun.challenges.each_with_index do |challenge, index|
         sheet1[count_row, 8] = "第#{challenge.position}关"