diff --git a/app/controllers/contests_controller.rb b/app/controllers/contests_controller.rb
index 12935d85f..719195cb3 100644
--- a/app/controllers/contests_controller.rb
+++ b/app/controllers/contests_controller.rb
@@ -336,11 +336,11 @@ class ContestsController < ApplicationController
 ##取出参赛应用   
     @softapplication = Softapplication.all 
     @contesting_softapplication = @contest.contesting_softapplications.
-     joins("LEFT JOIN softapplications ON contesting_softapplications.softapplication_id=softapplications.id").
-     joins("LEFT JOIN seems_rateable_cached_ratings ON seems_rateable_cached_ratings.cacheable_id=softapplications.id").
-     where("seems_rateable_cached_ratings.cacheable_type='Softapplication'").
-     where("seems_rateable_cached_ratings.dimension = 'quality'").
-     order("seems_rateable_cached_ratings.avg").reverse_order
+      joins("LEFT JOIN softapplications ON contesting_softapplications.softapplication_id=softapplications.id").
+      joins("LEFT JOIN (
+        SELECT * FROM seems_rateable_cached_ratings WHERE cacheable_type='Softapplication' AND DIMENSION = 'quality') AS cached
+      ON cached.cacheable_id=softapplications.id").
+      order("cached.avg").reverse_order
     @contesting_softapplication = paginateHelper  @contesting_softapplication, 10
     
     
diff --git a/app/views/contests/show_attendingcontest.html.erb b/app/views/contests/show_attendingcontest.html.erb
index 40f9420bd..834019c8a 100644
--- a/app/views/contests/show_attendingcontest.html.erb
+++ b/app/views/contests/show_attendingcontest.html.erb
@@ -229,7 +229,7 @@
 	</div>
 	<div style="padding-left: 68px; padding-bottom: 8px">
 		<span>发布时间：<%= format_time c_softapplication.created_at %></span>
-		<span style="padding-left: 50px">最终得分：<%= c_softapplication.softapplication.average(:quality).avg.round(2)%>分</span>
+		<span style="padding-left: 50px">最终得分：<%= c_softapplication.softapplication.average(:quality).try(:avg).try(:round, 2).to_i.to_s%>分</span>
 
 		
 	</div>
diff --git a/app/views/softapplications/show.html.erb b/app/views/softapplications/show.html.erb
index dcbc45f14..1dfbf0154 100644
--- a/app/views/softapplications/show.html.erb
+++ b/app/views/softapplications/show.html.erb
@@ -82,7 +82,7 @@
 		</div>
 		<div style="float: left; padding-left: 100px; padding-top:35px ">
 			<div style="padding-left: 25px;">最终得分</div>
-			<div style="padding-left: 32px; padding-top: 1px; font-size: 15px; color: blue"><%=@softapplication.average(:quality).avg.round(2)%></div>
+			<div style="padding-left: 35px; padding-top: 1px; font-size: 15px; color: blue"><%=@softapplication.average(:quality).try(:avg).try(:round, 2).to_i.to_s%>分</div>
 			<div style="padding-top: 3px"><%= rating_for @softapplication, :static => true, dimension: :quality, class: 'rateable div_inline' %></div>
 		</div>
 		<div style="float: left; padding-left: 100px; padding-top:35px ">