diff --git a/app/controllers/homework_attach_controller.rb b/app/controllers/homework_attach_controller.rb
index 4a070cb39..564f60ac3 100644
--- a/app/controllers/homework_attach_controller.rb
+++ b/app/controllers/homework_attach_controller.rb
@@ -427,7 +427,7 @@ class HomeworkAttachController < ApplicationController
     @homework = HomeworkAttach.find(params[:homework_id])
 
     #保存评分
-    @homework.rate(@m_score,User.current.id,:quality) if @m_score && @m_score != "0"
+    @homework.rate(@m_score.to_i,User.current.id,:quality) if @m_score && @m_score != "0"
     #保存评论
     @is_comprehensive_evaluation = @is_teacher ? 1 : (@is_anonymous_comments ? 2 : 3) #判断当前评论是老师评论？匿评？留言
     if params[:new_form] && params[:new_form][:user_message] && params[:new_form][:user_message] != ""  #有没有留言