diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 533cead1..b1a66080 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -1152,9 +1152,10 @@ class ApplicationController < ActionController::Base
   def user_login_and_from_openi
     url = request.referer.nil? ? Redmine::Configuration['educoder_domain'] : request.referer
     flag = URI(url).host == URI(Redmine::Configuration['openi_domain']).host && !current_user.logged?
-    logger.info "----------------------- #{url} -------------------------"
-    logger.info "----------------------- #{URI(url).host} --------------------------"
-    logger.info "----------------------- #{flag} -------------------------"
+    logger.info "----------------------- request referer: #{request.referer} -------------------------"
+    logger.info "----------------------- url after processed: #{url} -------------------------"
+    logger.info "----------------------- host: #{URI(url).host} --------------------------"
+    logger.info "----------------------- handle_flag: #{flag} -------------------------"
     flag
   end
 end