diff --git a/app/controllers/courses_controller.rb b/app/controllers/courses_controller.rb
index c0e99d546..44248ceae 100644
--- a/app/controllers/courses_controller.rb
+++ b/app/controllers/courses_controller.rb
@@ -705,7 +705,7 @@ class CoursesController < ApplicationController
         #"show_course_journals_for_messages" => true,
         "show_bids" => true,
         "show_homeworks" => true,
-        #"show_polls" => true
+        "show_polls" => true
     }
     @date_to ||= Date.today + 1
     @date_from = (@date_to - @days) > @course.created_at.to_date ? (@date_to - @days) : @course.created_at.to_date
diff --git a/app/controllers/poll_controller.rb b/app/controllers/poll_controller.rb
index b897d039a..32ec3dad2 100644
--- a/app/controllers/poll_controller.rb
+++ b/app/controllers/poll_controller.rb
@@ -29,7 +29,7 @@ class PollController < ApplicationController
     end
     #已提交问卷的用户不能再访问该界面
     if has_commit_poll?(@poll.id,User.current.id) && (!User.current.admin?)
-      render_403
+      redirect_to poll_index_url(:polls_type => "Course", :polls_group_id => @course.id)
     else
       @can_edit_poll = (!has_commit_poll?(@poll.id,User.current.id)) || User.current.admin?
       @percent = get_percent(@poll,User.current)
diff --git a/app/helpers/courses_helper.rb b/app/helpers/courses_helper.rb
index 2e06e3a43..801d98b0b 100644
--- a/app/helpers/courses_helper.rb
+++ b/app/helpers/courses_helper.rb
@@ -691,9 +691,11 @@ module CoursesHelper
     #end
 
     #poll_count
-    #Poll.where(polls_group_id: @course_ids, polls_type: Course, polls_status: 2||3).where("published_at>?",date_from).each do |poll|
-    #  activities[poll.polls_group_id]+=1
-    #end
+    # 动态目前只统计发布的问卷，关闭的问卷不在动态内显示
+    # Poll.where(polls_group_id: @course_ids, polls_type: Course, polls_status: 2||3).where("published_at>?",date_from).each do |poll|
+    Poll.where(polls_group_id: @course_ids, polls_type: Course, polls_status: 2||3).where("published_at>?",date_from).each do |poll|
+      activities[poll.polls_group_id]+=1
+    end
     #end
 
 
diff --git a/app/models/poll.rb b/app/models/poll.rb
index 943c08b51..64e9df79a 100644
--- a/app/models/poll.rb
+++ b/app/models/poll.rb
@@ -7,22 +7,24 @@ class Poll < ActiveRecord::Base
   has_many :poll_users, :dependent => :destroy
   has_many :users, :through => :poll_users #该文件被哪些用户提交答案过
   # 添加课程的poll动态
-#  has_many :acts, :class_name => 'Activity', :as => :act, :dependent => :destroy
-#  after_create :act_as_activity
+  has_many :acts, :class_name => 'Activity', :as => :act, :dependent => :destroy
+  after_create :act_as_activity
 
-#  acts_as_event :title => Proc.new {|o| "#{l(:label_my_message)} ##{o.id}: #{o.name}" },
-#                :description => :description,
-#                :author => :author,
-#                :url => Proc.new {|o| {:controller => 'poll', :action => 'show', :id => o.id}}
+  acts_as_event :title => Proc.new {|o| "#{l(:label_course_poll)}: #{o.polls_name}" },
+               :description => :polls_description,
+               :datetime => :published_at,
+               :author => :user,
+               :url => Proc.new {|o| {:controller => 'poll', :action => 'show', :id => o.id}}
 
-#  acts_as_activity_provider :type => 'polls',
-#                            :permission => :view_course_polls,
-                            #:find_options => {:include => [:course, :author]},
-                            #:timestamp => "#{self.table_name}.published_at",
-#                            :author_key => :author_id
+  acts_as_activity_provider :type => 'polls',
+                            #:permission => :view_course_polls,
+                            :find_options => {:select => "#{Poll.table_name}.*",
+                                              :joins => "LEFT JOIN #{Course.table_name}  ON ( #{Poll.table_name}.polls_type='Course' AND #{Poll.table_name}.polls_status= 2 AND #{Poll.table_name}.polls_group_id = #{Course.table_name}.id )"},
+                            :timestamp => "#{self.table_name}.published_at",
+                            :author_key => :user_id
 
-#  def act_as_activity
-#    self.acts << Activity.new(:user_id => self.user_id)
-#  end
+  def act_as_activity
+     self.acts << Activity.new(:user_id => self.user_id)
+  end
 
 end
diff --git a/config/locales/courses/zh.yml b/config/locales/courses/zh.yml
index e0a39f51d..0f6c1fa01 100644
--- a/config/locales/courses/zh.yml
+++ b/config/locales/courses/zh.yml
@@ -90,4 +90,6 @@ zh:
 
   #setting
   label_user_name: "用户名称"
-  #setting end
\ No newline at end of file
+  #setting end
+
+  label_course_poll: 课程问卷
\ No newline at end of file
diff --git a/lib/redmine.rb b/lib/redmine.rb
index ad73c2db1..ed96e01ff 100644
--- a/lib/redmine.rb
+++ b/lib/redmine.rb
@@ -118,7 +118,7 @@ Redmine::AccessControl.map do |map|
   map.permission :projects_attachments_download,{:attachments => :download},:belong_to_project => true
   map.permission :course_attachments_download,{:attachments => :download},:belong_to_course => true
   map.permission :contest_attachments_download,{:attachments => :download},:belong_to_contest => true
-
+  map.permission :view_polls, {}, :public => true, :read => true
   map.permission :view_homeworks, {}, :public => true, :read => true
 
   map.course_module :files do |map|
@@ -487,7 +487,7 @@ Redmine::Activity.map do |activity|
   activity.register :course_messages, :default => false, :class_name => 'Message'
 
   activity.register :homeworks, :class_name => 'Bid'
-#  activity.register :polls, :class_name => 'Poll'
+  activity.register :polls, :class_name => 'Poll'
 end
 
 Redmine::Search.map do |search|