diff --git a/app/controllers/shixuns_controller.rb b/app/controllers/shixuns_controller.rb
index f4bbc6ad8..d9a46da0a 100644
--- a/app/controllers/shixuns_controller.rb
+++ b/app/controllers/shixuns_controller.rb
@@ -243,8 +243,8 @@ class ShixunsController < ApplicationController
     @order = params[:order] || "myshixun_count"
     bsort = params[:sort] || "desc"
     @sort = bsort == "desc" ? "asc" : "desc"
-    if @order == "created_at"
-      order_str = "#{Shixun.table_name}.created_at #{bsort}"
+    if @order == "updated_at"
+      order_str = "#{Shixun.table_name}.updated_at #{bsort}"
     else
       order_str = "myshixun_count #{bsort}, #{Shixun.table_name}.updated_at #{bsort}"
     end
@@ -300,7 +300,7 @@ class ShixunsController < ApplicationController
       when nil, "0"
         @shixuns = @shixuns
     end
-    if @order == "created_at"
+    if @order == "updated_at"
       @shixuns =@shixuns.reorder(order_str)
     else
       # 最热排序
diff --git a/app/controllers/subjects_controller.rb b/app/controllers/subjects_controller.rb
index f14ec8017..45575406f 100644
--- a/app/controllers/subjects_controller.rb
+++ b/app/controllers/subjects_controller.rb
@@ -8,12 +8,17 @@ class SubjectsController < ApplicationController
   include ApplicationHelper
 
   def index
-    @order = params[:order] || "updated_at"
-    bsort = params[:sort] || "asc"
+    @order = params[:order] || "myshixun_count"
+    bsort = params[:sort] || "desc"
     @sort = bsort == "desc" ? "asc" : "desc"
     search = params[:search]
     #ids = Subject.find_by_sql("select group_concat(id) as allId from subjects where id in (SELECT distinct(subject_id) FROM `stages`)")
-    @subjects = Subject.where("hidden = 0").reorder("#{@order} #{bsort}")
+    if @order == "myshixun_count"
+      #@shixuns = @shixuns.select("shixuns.*, (select count(myshixuns.id) from myshixuns where myshixuns.shixun_id = shixuns.id group by shixuns.id) AS myshixunCount").reorder("status = 2 desc, myshixunCount desc")
+      @subjects = Subject.where("hidden = 0").select("subjects.*, (select count(myshixuns.id) from myshixuns, stage_shixuns where myshixuns.shixun_id = stage_shixuns.shixun_id and stage_shixuns.subject_id = subjects.id group by subjects.id) AS myshixunCount").reorder("status = 2 desc, myshixunCount #{bsort}")
+    else
+      @subjects = Subject.where("hidden = 0").reorder("#{@order} #{bsort}")
+    end
     @subject_created_count = Subject.where(:user_id => User.current.id).count
     @subjects_all_count = @subjects.count
     #@subjects = Subject.where("name like ?", "%#{search}%").reorder("#{@order} #{@sort}")
diff --git a/app/models/subject.rb b/app/models/subject.rb
index 7eb102bf5..fc4fa393c 100644
--- a/app/models/subject.rb
+++ b/app/models/subject.rb
@@ -35,6 +35,15 @@ class Subject < ActiveRecord::Base
     count
   end
 
+  def subject_users
+    count = 0
+    self.stage_shixuns.each do |stage_shixun|
+      shixun = stage_shixun.shixun
+      count += shixun.myshixuns.count
+    end
+    count
+  end
+
   def subject_score
     score = 0
     self.stage_shixuns.each do |stage_shixun|
diff --git a/app/views/subjects/_subject_list.html.erb b/app/views/subjects/_subject_list.html.erb
index 6bca42ab6..908af0a9e 100644
--- a/app/views/subjects/_subject_list.html.erb
+++ b/app/views/subjects/_subject_list.html.erb
@@ -1,9 +1,9 @@
 <ul class="nav_check_item border-bottom-orange clearfix mb15">
-  <li class="fl <%= @order == 'updated_at' ? 'check_nav' : "" %>">
-    <%= link_to "最热", subjects_path(:order => "updated_at", :search => @search, :sort => @sort), :remote => true %>
+  <li class="fl <%= @order == 'myshixun_count' ? 'check_nav' : "" %>">
+    <%= link_to "最热", subjects_path(:order => "myshixun_count", :search => @search, :sort => @sort), :remote => true %>
   </li>
-  <li class="fl <%= @order == 'created_at' ? 'check_nav' : "" %>">
-    <%= link_to "最新", subjects_path(:order => "created_at", :search => @search, :sort => @sort), :remote => true %>
+  <li class="fl <%= @order == 'updated_at' ? 'check_nav' : "" %>">
+    <%= link_to "最新", subjects_path(:order => "updated_at", :search => @search, :sort => @sort), :remote => true %>
   </li>
   <li class="fr" style="width: auto;cursor:default;">共<span class="color-orange"><%= @subjects_count %></span>个检索结果</li>
 </ul>
@@ -43,8 +43,8 @@
         <% if subject.subject_score > 0 %>
             <span class="pl5 pr5"><i class="fa fa-viacoin color-light-green pr5" aria-hidden="true" data-tip-down="总经验值"></i><em><%= subject.subject_score %></em></span>
         <% end %>
-        <% if subject.subject_challenges > 0 %>
-            <span class="pl5 pr5"><i class="fa fa-users color-light-green pr5" aria-hidden="true" data-tip-down="学习人数"></i><em><%= subject.subject_challenges %></em></span>
+        <% if subject.subject_users > 0 %>
+            <span class="pl5 pr5"><i class="fa fa-users color-light-green pr5" aria-hidden="true" data-tip-down="学习人数"></i><em><%= subject.subject_users %></em></span>
         <% end %>
       </p>
       <div class="clearfix task-index-list-user task_yx_bo" style="margin-bottom: 0px">