diff --git a/app/controllers/attachments_controller.rb b/app/controllers/attachments_controller.rb
index c58cd3f82..db77283cc 100644
--- a/app/controllers/attachments_controller.rb
+++ b/app/controllers/attachments_controller.rb
@@ -182,9 +182,11 @@ class AttachmentsController < ApplicationController
     respond_to do |format|
       # modify by nwb
       if !@attachment.container.nil? &&
-         (@attachment.container.is_a?(Course) || ((@attachment.container.has_attribute?(:course) ||@attachment.container.has_attribute?(:course_id) )  && @attachment.container.course ) )
+         (@attachment.container.is_a?(Course) || ((@attachment.container.has_attribute?(:course) ||@attachment.container.has_attribute?(:course_id) )  && @attachment.container.course ) || ((@attachment.container.has_attribute?(:board) || @attachment.container.has_attribute?(:board_id)) && @attachment.container.board && @attachment.container.board.course ) )
         if @attachment.container.is_a?(News)
           format.html { redirect_to_referer_or news_path(@attachment.container) }
+        elsif @attachment.container.is_a?(Message)
+          format.html { redirect_to_referer_or new_board_message_path(@attachment.container) }
         elsif @course.nil?
           format.html { redirect_to_referer_or forum_memo_path(@attachment.container.forum, @attachment.container) }
         else
diff --git a/app/helpers/projects_helper.rb b/app/helpers/projects_helper.rb
index 152b744c3..c0e3d56f2 100644
--- a/app/helpers/projects_helper.rb
+++ b/app/helpers/projects_helper.rb
@@ -175,9 +175,19 @@ module ProjectsHelper
     render_project_nested_lists(projects) do |project|
       #Modified by young
         if (project.try(:project_type) == Project::ProjectType_course )
-          s = link_to_project(project, {}, :class => "#{project.css_classes} #{User.current.member_of?(project) ? 'my-project' : nil}").html_safe
+          unless project.is_public == 1
+          s = "<span class='private_project'>#{l(:lable_private)}</span>".html_safe
+          else
+            s = "".html_safe
+          end
+          s += link_to_project(project, {}, :class => "#{project.css_classes} #{User.current.member_of?(project) ? 'my-project' : nil}").html_safe
         else
-          s = link_to_project(project, {}, :class => "#{project.css_classes} #{User.current.member_of?(project) ? 'my-project' : nil}")
+          unless project.is_public
+            s = "<span class='private_project'>#{l(:label_private)}</span>".html_safe
+          else
+            s = "".html_safe
+          end
+          s += link_to_project(project, {}, :class => "#{project.css_classes} #{User.current.member_of?(project) ? 'my-project' : nil}")
         end
       #Ended by young
       if project.description.present?
diff --git a/app/views/courses/_course.html.erb b/app/views/courses/_course.html.erb
index ddf08c3fb..12eec558f 100644
--- a/app/views/courses/_course.html.erb
+++ b/app/views/courses/_course.html.erb
@@ -10,6 +10,9 @@
 <div class="wiki-description">
 	<p >
 		<%= content_tag('span',"#{l(:label_bid_show_course_name)}:", :class => "course-font")%>
+        <% unless @course.is_public == 1 %>
+            <span class='private_project'><%= l(:lable_private) %></span>
+        <% end %>
 		<%= content_tag('span', link_to("#{@course.name}", course_path(@course), :class => "info"))%>
 	</p>
 	<p >
diff --git a/app/views/welcome/_course_list.html.erb b/app/views/welcome/_course_list.html.erb
index 8d31f7c4c..0dcf1085a 100644
--- a/app/views/welcome/_course_list.html.erb
+++ b/app/views/welcome/_course_list.html.erb
@@ -6,7 +6,10 @@
       <!-- 上左下右 -->
       <div class='desc_item'>
                     <span class=''>
-                      <%= link_to(course.name.truncate(30, omission: '...')+":", course_path(course.id), :class => "d-g-blue d-p-project-name", :title => "#{course.name}") %>
+                     <% unless course.is_public == 1 %>
+                        <span class="private_project"><%= l(:lable_private) %></span>
+                     <% end %>
+                     <%= link_to(course.name.truncate(30, omission: '...')+":", course_path(course.id), :class => "d-g-blue d-p-project-name", :title => "#{course.name}") %>
 
                     </span>
                     <span class='font_bolder'>
diff --git a/app/views/welcome/index.html.erb b/app/views/welcome/index.html.erb
index d91019e53..fd4a1637e 100644
--- a/app/views/welcome/index.html.erb
+++ b/app/views/welcome/index.html.erb
@@ -72,6 +72,9 @@
 				</div>
 				<!-- 上左下右 -->
 				<div style="float: left; margin-left: 10px; width: 380px;">
+                  <% unless project.is_public %>
+                     <span class="private_project"><%= l(:lable_private) %></span>
+                  <% end %>
 					<%= link_to( project.name, project_path(project.id), :class => "d-g-blue d-p-project-name",:title => "#{project.name}" )%>
 					 (<%= link_to "#{projectCount(project)}人", project_member_path(project) ,:course =>'0' %>) 			
 				</div>
diff --git a/config/locales/en.yml b/config/locales/en.yml
index 89898409e..ee7e76ed1 100644
--- a/config/locales/en.yml
+++ b/config/locales/en.yml
@@ -1809,4 +1809,5 @@ en:
   notice_account_invalid_creditentials_new: You have not to the mailbox activation
   lable_unknow_type: Unknow type
   lable_score_less_than_zero: Score less than 0, revised to 0
-  review_assignments: review assignments
\ No newline at end of file
+  review_assignments: review assignments
+  lable_private: private
\ No newline at end of file
diff --git a/config/locales/zh.yml b/config/locales/zh.yml
index 54585e314..a3db5964b 100644
--- a/config/locales/zh.yml
+++ b/config/locales/zh.yml
@@ -2118,4 +2118,4 @@ zh:
   lable_unknow_type: 未知类型
   lable_score_less_than_zero: 得分小于0，修正为0
   review_assignments: 评审任务
-  
\ No newline at end of file
+  lable_private: 私有
diff --git a/public/stylesheets/application.css b/public/stylesheets/application.css
index 5f4a3166e..1d785eb9d 100644
--- a/public/stylesheets/application.css
+++ b/public/stylesheets/application.css
@@ -1618,6 +1618,8 @@ div.issue .next-prev-links {color:#999;}
 div.issue table.attributes th {width:22%;}
 div.issue table.attributes td {width:28%;}
 
+.private_project { position:relative; bottom: 2px; text-transform: uppercase; background: #d22; color: #fff; font-weight:bold; padding: 0px 2px 0px 2px; font-size: 60%; margin-right: 2px; border-radius: 2px;}
+
 #issue_tree table.issues, #relations table.issues { border: 0; }
 #issue_tree td.checkbox, #relations td.checkbox {display:none;}
 #relations td.buttons {padding:0;}