diff --git a/app/controllers/poll_controller.rb b/app/controllers/poll_controller.rb
index d49694e6f..394c52f13 100644
--- a/app/controllers/poll_controller.rb
+++ b/app/controllers/poll_controller.rb
@@ -342,6 +342,7 @@ class PollController < ApplicationController
   #关闭问卷
   def close_poll
     @poll.polls_status = 3
+    @poll.closed_at = Time.now
     if @poll.save
       respond_to do |format|
         format.js