diff --git a/app/controllers/welcome_controller.rb b/app/controllers/welcome_controller.rb
index 5e4cc1bb..eeaff930 100755
--- a/app/controllers/welcome_controller.rb
+++ b/app/controllers/welcome_controller.rb
@@ -31,6 +31,9 @@ class WelcomeController < ApplicationController
 
   DCODES = %W(2 3 4 5 6 7 8 9 a b c f e f g h i j k l m n o p q r s t u v w x y z)
   def local_init
+    LocalSubject.delete_all
+    LocalStage.delete_all
+    LocalStageShixun.delete_all
     LocalShixun.delete_all
     LocalMirrorRepository.delete_all
     LocalShixunTagRepertoire.delete_all