diff --git a/app/controllers/poll_controller.rb b/app/controllers/poll_controller.rb
index 2f8a26c2a..191968183 100644
--- a/app/controllers/poll_controller.rb
+++ b/app/controllers/poll_controller.rb
@@ -117,6 +117,21 @@ class PollController < ApplicationController
    a = 1
   end
 
+  #删除单选题
+  def delete_poll_question
+    @poll_question = PollQuestion.find params[:poll_question]
+    poll_questions = @poll_question.poll.poll_questions.where("question_number > #{@poll_question.question_number}")
+    poll_questions.each do |question|
+      question.question_number -= 1
+      question.save
+    end
+    if @poll_question && @poll_question.destroy
+      respond_to do |format|
+        format.js
+      end
+    end
+  end
+
   private
   def find_poll_and_course
     @poll = Poll.find params[:id]
diff --git a/app/views/poll/_show_MC.html.erb b/app/views/poll/_show_MC.html.erb
index 93077b5b3..f3fc9c8b5 100644
--- a/app/views/poll/_show_MC.html.erb
+++ b/app/views/poll/_show_MC.html.erb
@@ -9,7 +9,8 @@
     <%end%>
 
   </div>
-  <a class="ur_icon_de" title="删除" onclick=""></a>
+  <%= link_to("", delete_poll_question_poll_index_path(:poll_question => poll_question.id),
+              method: :delete, :confirm => l(:text_are_you_sure), :remote => true, :class => "ur_icon_de")  %>
   <a class="ur_icon_edit" title="编辑" onclick="pollQuestionEdit(<%= poll_question.id%>);"></a>
   <div class="cl"></div>
   <div class="ur_inputs">
diff --git a/app/views/poll/delete_poll_question.js.erb b/app/views/poll/delete_poll_question.js.erb
new file mode 100644
index 000000000..ad8fe7674
--- /dev/null
+++ b/app/views/poll/delete_poll_question.js.erb
@@ -0,0 +1 @@
+$("#poll_questions_<%= @poll_question.id%>").remove();
\ No newline at end of file
diff --git a/config/routes.rb b/config/routes.rb
index 5a533894c..14f23b5f4 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -64,6 +64,9 @@ RedmineApp::Application.routes.draw do
       post 'create_poll_question'
       post 'update_poll_question'
     end
+    collection do
+      delete 'delete_poll_question'
+    end
   end
 
   resources :contest_notification