diff --git a/app/views/layouts/_side_bar.html.erb b/app/views/layouts/_side_bar.html.erb
index 7b0ffac0..675078b3 100644
--- a/app/views/layouts/_side_bar.html.erb
+++ b/app/views/layouts/_side_bar.html.erb
@@ -79,13 +79,13 @@
 	<% end -%>
 <% end %>
 
-<%= content_tag :li, :class => active_for_controllers('cals','/panel/gallery/back_end/tags') || active_for_app_auth("calendar") do -%>
+<%= content_tag :li, :class => active_for_controllers('cals','calendar_categories') || active_for_app_auth("calendar") do -%>
 	<%= link_to content_tag(:i, nil, :class => 'icons-calendar') + t('admin.calendar'), panel_calendar_back_end_cals_path %>
-	<%= content_tag :ul, :class => ("nav nav-list " + visible_for_controllers('cals') ) do -%>
+	<%= content_tag :ul, :class => ("nav nav-list " + visible_for_controllers('cals','calendar_categories') ) do -%>
 		<%#= content_tag :li, link_to(t('admin.ad.all_banners'), admin_ad_banners_path), :class => active_for_action('ad_banners', 'index') %>
 		<%#= content_tag :li, link_to(t('admin.ad.new_banner'), new_admin_ad_banner_path), :class => active_for_action('ad_banners', 'new') %>
 		<%#= content_tag :li, link_to(t('admin.ad.new_image'), new_ad_image_admin_ad_banners_path), :class => active_for_action('ad_images', 'new') %>
-	<%#= content_tag :li, link_to(t('gallery.categories'), panel_gallery_back_end_gallery_categories_path), :class => active_for_action('/panel/gallery/back_end/categorylist','categorylist') %>
+	<%= content_tag :li, link_to(t('calendar.calendars'), panel_calendar_back_end_calendar_categories_path), :class => active_for_action('calendar_categories','index') %>
 	<%#= content_tag :li, link_to(t('gallery.tags'), panel_gallery_back_end_tags_path), :class => active_for_action('/panel/gallery/back_end/tags', 'index') %>
 	<%#= content_tag :li, link_to(t('admin.module.authorization'),admin_module_app_manager_auth_proc_path(ModuleApp.first(conditions: {title: "Gallery"}))), :class => active_for_app_auth('gallery')  if (is_admin? rescue nil) %>
 	<% end -%>
diff --git a/vendor/built_in_modules/calendar/app/controllers/panel/calendar/back_end/calendar_categories_controller.rb b/vendor/built_in_modules/calendar/app/controllers/panel/calendar/back_end/calendar_categories_controller.rb
new file mode 100644
index 00000000..7c368659
--- /dev/null
+++ b/vendor/built_in_modules/calendar/app/controllers/panel/calendar/back_end/calendar_categories_controller.rb
@@ -0,0 +1,7 @@
+class Panel::Calendar::BackEnd::CalendarCategoriesController < OrbitBackendController
+
+	def index
+		
+	end
+	
+end
\ No newline at end of file
diff --git a/vendor/built_in_modules/calendar/app/views/panel/calendar/back_end/calendar_categories/index.html.erb b/vendor/built_in_modules/calendar/app/views/panel/calendar/back_end/calendar_categories/index.html.erb
new file mode 100644
index 00000000..d1697b91
--- /dev/null
+++ b/vendor/built_in_modules/calendar/app/views/panel/calendar/back_end/calendar_categories/index.html.erb
@@ -0,0 +1 @@
+this is category page
\ No newline at end of file
diff --git a/vendor/built_in_modules/calendar/config/locales/en.yml b/vendor/built_in_modules/calendar/config/locales/en.yml
new file mode 100644
index 00000000..586c2f6c
--- /dev/null
+++ b/vendor/built_in_modules/calendar/config/locales/en.yml
@@ -0,0 +1,3 @@
+en:
+  calendar:
+     calendars: Calendars
\ No newline at end of file
diff --git a/vendor/built_in_modules/calendar/config/locales/zh_tw.yml b/vendor/built_in_modules/calendar/config/locales/zh_tw.yml
new file mode 100644
index 00000000..d0bb3120
--- /dev/null
+++ b/vendor/built_in_modules/calendar/config/locales/zh_tw.yml
@@ -0,0 +1,3 @@
+zh_tw:
+  calendar:
+      calendars: Calendars
\ No newline at end of file
diff --git a/vendor/built_in_modules/calendar/config/routes.rb b/vendor/built_in_modules/calendar/config/routes.rb
index bf485cf0..39d9b60a 100644
--- a/vendor/built_in_modules/calendar/config/routes.rb
+++ b/vendor/built_in_modules/calendar/config/routes.rb
@@ -4,6 +4,7 @@ Rails.application.routes.draw do
 	      namespace :back_end do 
 
 	      	resources :cals
+	      	resources :calendar_categories
 
 	      end
 	  end