diff --git a/app/controllers/application_controller.rb b/app/controllers/application_controller.rb
index 4506d20e1..177eb1a42 100644
--- a/app/controllers/application_controller.rb
+++ b/app/controllers/application_controller.rb
@@ -245,7 +245,7 @@ class ApplicationController < ActionController::Base
 
 
 		# 测试版前端需求
-		logger.info("subdomain:#{subdomain}")
+		logger.info("subdomain:#{request.subdomain}")
 		if request.subdomain == "pre-newweb"
 			if params[:debug] == 'teacher' #todo 为了测试,记得讲debug删除
 				User.current = User.find 81403