diff --git a/app/controllers/homework_common_controller.rb b/app/controllers/homework_common_controller.rb
index 06bc1fd38..648108e47 100644
--- a/app/controllers/homework_common_controller.rb
+++ b/app/controllers/homework_common_controller.rb
@@ -3,6 +3,7 @@ class HomeworkCommonController < ApplicationController
   before_filter :find_course, :only => [:index,:new,:create]
   before_filter :find_homework, :only => [:edit,:update,:alert_anonymous_comment,:start_anonymous_comment,:stop_anonymous_comment,:destroy]
   before_filter :teacher_of_course, :only => [:new, :create, :edit, :update, :destroy, :start_anonymous_comment, :stop_anonymous_comment, :alert_anonymous_comment]
+  after_create :send_mail
 
   def index
     homeworks = @course.homework_commons.order("created_at desc")
@@ -183,6 +184,10 @@ class HomeworkCommonController < ApplicationController
     end
   end
 
+  def send_mail
+    Mailer.run.homework_added(self)
+  end
+
   private
   #获取课程
   def find_course
diff --git a/app/models/mailer.rb b/app/models/mailer.rb
index 729da17c3..8d027da12 100644
--- a/app/models/mailer.rb
+++ b/app/models/mailer.rb
@@ -517,6 +517,15 @@ class Mailer < ActionMailer::Base
     end
   end
 
+  # Builds a Mail::Message object used to email recipients of a course when an homework are posted.
+  #
+  # Example:
+  #   attachments_added(attachments) => Mail::Message object
+  #   Mailer.attachments_added(attachments).deliver => sends an email to the project's recipients
+  def homework_added
+
+  end
+
   # Builds a Mail::Message object used to email recipients of a news' project when a news item is added.
   #
   # Example: