diff --git a/app/controllers/announcements_controller.rb b/app/controllers/announcements_controller.rb
index a3d513e..547f1cd 100644
--- a/app/controllers/announcements_controller.rb
+++ b/app/controllers/announcements_controller.rb
@@ -673,8 +673,9 @@ class AnnouncementsController < ApplicationController
     else
       announcement = Bulletin.can_display_and_sorted.where(:uid => uid).first
     end
-    @bulletin = announcement
     announcement = Bulletin.where(:uid => uid).first if announcement.nil?
+    @bulletin = announcement
+
     url_to_edit = OrbitHelper.user_can_edit?(announcement) ? "/admin/announcements/#{announcement.id.to_s}/edit" : ""
 
     access_level = OrbitHelper.user_access_level?
@@ -691,6 +692,18 @@ class AnnouncementsController < ApplicationController
 
     return {} if (announcement.category.disable rescue false)
 
+    if !announcement.deadline.nil? && announcement.deadline < Time.now
+      return {
+      "tags" => [],
+      "bulletin_files" => [],
+      "bulletin_links" => [],
+      "data" => {
+        "title" => announcement.title,
+        "body" => "<b class='announcement_expired'>#{I18n.t('announcement.expired')}</b><br><a class='announcement_go_back_list' href='../' title='#{I18n.t('announcement.go_back')}'>#{I18n.t('announcement.go_back')}</a>".html_safe
+      }
+    }
+    end
+
     tags = announcement.tags.map{|tag|  {
       "tag" => tag.name ,
       "url" => OrbitHelper.page_for_tag(tag)
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 61623cb..731544e 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -3,6 +3,8 @@ en:
     feed: Feed
     import: Import
   announcement:
+    expired: This announcement has been expired.
+    go_back: Go back to the list of announcements.
     annc_dept: Department
     manually_sort: Manually Sort
     enable_manually_sort: Enable Manually Sort
diff --git a/config/locales/zh_tw.yml b/config/locales/zh_tw.yml
index f4e6bf5..8c89a4b 100644
--- a/config/locales/zh_tw.yml
+++ b/config/locales/zh_tw.yml
@@ -4,6 +4,8 @@ zh_tw:
     import: 匯入
     get_all_anncs_without_subannc: "選擇相關公告"
   announcement:
+    expired: 此則公告已過期
+    go_back: 回到公告列表
     annc_dept: 公告單位
     manually_sort: 手動排序
     enable_manually_sort: 開啟手動排序