diff --git a/app/controllers/news_controller.rb b/app/controllers/news_controller.rb
index b33dd540e..d35d7ac63 100644
--- a/app/controllers/news_controller.rb
+++ b/app/controllers/news_controller.rb
@@ -79,21 +79,20 @@ class NewsController < ApplicationController
           @b_sort = 2
         end
 
-        sort_name = "created_on"
+        sort_name = "updated_at"
 
         sort_type = @b_sort == 1 ? "asc" : "desc"
 
         scope = @course ? @course.news.course_visible : News.course_visible
         news_arr = scope.map{|news| news.id}
 
-
         @page = params[:page] ? params[:page].to_i + 1 : 0
         news_page = 0 #@page *10
         @news_count = scope.count
         @is_new = params[:is_new]
         @q = params[:subject]
         if params[:subject].nil? || params[:subject].blank?
-          scope_order = scope.reorder("#{News.table_name}.sticky DESC, #{News.table_name}.#{sort_name} #{sort_type}").offset(news_page).includes(:author,:course).all()
+          scope_order = scope.reorder("#{News.table_name}.sticky DESC, #{News.table_name}.created_on #{sort_type}").offset(news_page).includes(:author,:course).all()
               #all(:include => [:author, :course],
                                   #:order => "#{News.table_name}.sticky DESC, #{News.table_name}.created_on DESC").limit(10).offset(news_page)
         else
@@ -101,6 +100,10 @@ class NewsController < ApplicationController
           #.all(:include => [:author, :course],:order => "#{News.table_name}.sticky DESC, #{News.table_name}.created_on DESC")
         end
 
+        scope_order.each do |topic|
+          topic[:updated_at] = CourseActivity.where("course_act_type='#{topic.class}' and course_act_id =#{topic.id}").first.updated_at
+        end
+
         #根据 赞+回复数排序
         if @order.to_i == 2
           @type = 2
@@ -115,6 +118,8 @@ class NewsController < ApplicationController
           scope_order = sortby_time_countcommon_hassticky scope_order,sort_name
         else
           @type = 1
+          @b_sort == 1 ? scope_order = scope_order.sort{|x,y| x[:updated_at]  <=> y[:updated_at] } : scope_order = scope_order.sort{|x,y| y[:updated_at]  <=> x[:updated_at] }
+          scope_order = sort_by_sticky scope_order
         end
 
         @newss = scope_order