diff --git a/app/controllers/messages_controller.rb b/app/controllers/messages_controller.rb
index 4cdd82d72..b5e698954 100644
--- a/app/controllers/messages_controller.rb
+++ b/app/controllers/messages_controller.rb
@@ -64,6 +64,11 @@ class MessagesController < ApplicationController
           #offset(@reply_pages.offset).
           #all
       #@replies = paginateHelper messages_replies,10
+      # 班级帖子消息设为已读
+      @replies.each do |comment|
+       course_message = CourseMessage.where(:course_message_id => comment.id, :user_id => User.current.id, :viewed => 0)
+       course_message.update_all(:viewed => 1)
+      end
       @left_nav_type = 2
       respond_to do |format|
         format.js