diff --git a/app/controllers/admin/writings_controller.rb b/app/controllers/admin/writings_controller.rb
index 361a528..72ce911 100644
--- a/app/controllers/admin/writings_controller.rb
+++ b/app/controllers/admin/writings_controller.rb
@@ -24,9 +24,9 @@ class Admin::WritingsController < OrbitMemberController
     end
     if params[:clear] != 'true'
       if(params[:new_filter] != nil && params[:new_filter][:type] == 'category')
-        @writings = Writing.where(:category_id.in=> @filter['category']).order_by(:year=>'desc',:month=>'desc',:id=>'desc').page(params[:page]).per(10)
+        @writings = Writing.where(:category_id.in=> @filter['category']).sort_year_month.page(params[:page]).per(10)
       else
-        @writings = Writing.order_by(:year=>'desc',:month=>'desc',:id=>'desc').page(params[:page]).per(10)
+        @writings = Writing.sort_year_month.page(params[:page]).per(10)
       end
     else
       redirect_to admin_writings_url
diff --git a/app/controllers/personal_writings_controller.rb b/app/controllers/personal_writings_controller.rb
index c6aeeb1..bb76b8d 100644
--- a/app/controllers/personal_writings_controller.rb
+++ b/app/controllers/personal_writings_controller.rb
@@ -1,6 +1,6 @@
 class PersonalWritingsController < ApplicationController
   def index
-    writings = Writing.where(:is_hidden=>false).order_by(:year=>'desc').page(OrbitHelper.params[:page_no]).per(OrbitHelper.page_data_count)
+    writings = Writing.sort_for_frontend.page(OrbitHelper.params[:page_no]).per(OrbitHelper.page_data_count)
     writing_list = writings.collect do |writing|
       {
         "year" => writing.year,
diff --git a/app/models/writing.rb b/app/models/writing.rb
index efba74b..5124f40 100644
--- a/app/models/writing.rb
+++ b/app/models/writing.rb
@@ -20,8 +20,9 @@ class Writing
   accepts_nested_attributes_for :writing_files, :allow_destroy => true
 
   before_validation :add_http
-
-  scope :sort_for_frontend, ->{ where(:is_hidden=>false).order_by(:year => "desc") }
+  index({year: -1, month: -1, _id: -1}, { unique: false, background: false })
+  scope :sort_year_month, ->{ order_by(:year=>'desc',:month=>'desc',:id=>'desc') }
+  scope :sort_for_frontend, ->{ where(:is_hidden=>false).order_by(:year=>"desc",:month=>'desc',:id=>"desc") }
 
   def get_plugin_data(fields_to_show)
     plugin_datas = []
diff --git a/app/views/plugin/personal_writing/_profile.html.erb b/app/views/plugin/personal_writing/_profile.html.erb
index 1cf229a..121d97d 100644
--- a/app/views/plugin/personal_writing/_profile.html.erb
+++ b/app/views/plugin/personal_writing/_profile.html.erb
@@ -7,9 +7,9 @@
 
 <%
   if has_access?
-    @writings = Writing.where(member_profile_id: @member.id).desc(:year).page(params[:page]).per(10)
+    @writings = Writing.where(member_profile_id: @member.id).sort_year_month.page(params[:page]).per(10)
   else
-    @writings = Writing.where(is_hidden: false, member_profile_id: @member.id).desc(:year).page(params[:page]).per(10)
+    @writings = Writing.where(is_hidden: false, member_profile_id: @member.id).sort_year_month.page(params[:page]).per(10)
   end
 %>