diff --git a/app/controllers/orbit_backend_controller.rb b/app/controllers/orbit_backend_controller.rb
index e27e5b00..98882ec3 100644
--- a/app/controllers/orbit_backend_controller.rb
+++ b/app/controllers/orbit_backend_controller.rb
@@ -13,6 +13,7 @@ class OrbitBackendController< ApplicationController
   def setup_vars
     @app_title = request.fullpath.split('/')[2]
     @app_title = request.fullpath.split('/')[1] if(@app_title == "back_end") 
+    @app_title.gsub!(/[?].*/,'')
     @module_app = ModuleApp.first(conditions: {:key => @app_title} )
   end
 
diff --git a/app/models/ad_banner.rb b/app/models/ad_banner.rb
index 09aa79c8..27ce11e1 100644
--- a/app/models/ad_banner.rb
+++ b/app/models/ad_banner.rb
@@ -7,6 +7,7 @@ class AdBanner
   field :title
   field :transition_msec,type: Integer
   field :ad_fx  #TODO Design should explain
+  field :best_size,:default => ''
 
   before_save :save_or_destroy
   validates_uniqueness_of :title
diff --git a/app/views/admin/ad_images/_form.html.erb b/app/views/admin/ad_images/_form.html.erb
index be5f2b47..1513fa05 100644
--- a/app/views/admin/ad_images/_form.html.erb
+++ b/app/views/admin/ad_images/_form.html.erb
@@ -80,7 +80,7 @@
               <!--請程式務必將圖片尺寸加入到行內裡-->
               <%= image_tag @ad_image.file rescue ''%>
             </div>
-            <span class="alert widgetInfo">此區塊圖片尺寸請使用580px × 225px</span>
+            <span class="alert widgetInfo"><%= t("admin.ad.widget_info_for_ad_image_size",:best_size=> @ad_image.ad_banner.best_size) if !@ad_image.ad_banner.best_size.empty?%></span>
             <div class="controls file-upload input-prepend">
               <label class="control-label add-on btn" for="input-upload">
 								<%= t(:browse) %>
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 3fabb3ca..15598a8e 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -100,6 +100,7 @@ en:
       transition_sec: Transition time
       trans_unit_sec: sec
       update_banner: Update Banner
+      widget_info_for_ad_image_size: "Best size with: %{best_size}"
     add: Add
     add_item: Add item
     add_language: Add language
diff --git a/config/locales/zh_tw.yml b/config/locales/zh_tw.yml
index 24af77b1..72140d35 100644
--- a/config/locales/zh_tw.yml
+++ b/config/locales/zh_tw.yml
@@ -96,6 +96,7 @@ zh_tw:
       transition_sec: 轉場單位時間
       trans_unit_sec: 秒
       update_banner: 更新輪播
+      widget_info_for_ad_image_size: "此區塊圖片尺寸請使用 %{best_size}"
     add: 新增
     add_item: 新增項目
     add_language: 新增語言