diff --git a/app/helpers/application_helper.rb b/app/helpers/application_helper.rb
index 3a2b0560..083a3d6f 100644
--- a/app/helpers/application_helper.rb
+++ b/app/helpers/application_helper.rb
@@ -4076,7 +4076,7 @@ module ApplicationHelper
   end
 
   def favicon
-    "<link rel='shortcut icon' type='image/x-icon' href='https://www.educoder.net/favicon.ico?1537840119' />".html_safe
+    "<link rel='shortcut icon' type='image/x-icon' href='https://data.educoder.net/images/avatars/LaboratorySetting/1tab?t=1610677202' />".html_safe
   end
 
   def robot_exclusion_tag
diff --git a/app/views/layouts/_logined_header.html.erb b/app/views/layouts/_logined_header.html.erb
index 76e59dcf..77cb5487 100644
--- a/app/views/layouts/_logined_header.html.erb
+++ b/app/views/layouts/_logined_header.html.erb
@@ -5,8 +5,8 @@
     <ul id="header-nav">
 <!--      <li class="<%#= params[:controller] == "welcome" ? 'active' : '' %>"><%#= link_to "首页", home_path %></li>-->
       <li class="<%= subjects_controller.include?(params[:controller]) ? " active" : "" %>"><%= link_to "实践课程", subjects_path %></li>
-      <li class="pr <%= shixuns_controller.include?(params[:controller]) ? " active" : "" %>"><%= link_to "实训项目", shixuns_path %></li>
       <li class="<%= course_controller.include?(params[:controller]) ? " active" : "" %>"><%= link_to "教学课堂", "/classrooms" %></li>
+      <li class="pr <%= shixuns_controller.include?(params[:controller]) ? " active" : "" %>"><%= link_to "实践项目", shixuns_path %></li>
 
       <% careers = Career.published.order("created_at asc") %>
       <% if careers.present? %>
diff --git a/app/views/layouts/_unlogin_header.html.erb b/app/views/layouts/_unlogin_header.html.erb
index fc8c54ca..d5ec85b9 100644
--- a/app/views/layouts/_unlogin_header.html.erb
+++ b/app/views/layouts/_unlogin_header.html.erb
@@ -7,8 +7,8 @@
     <ul id="header-nav">
 <!--      <li class="<%#= params[:controller] == "welcome" ? 'active' : '' %>"><%#= link_to "首页", home_path %></li>-->
       <li class="<%= subjects_controller.include?(params[:controller]) ? " active" : "" %>"><%= link_to "实践课程", subjects_path %></li>
-      <li class="pr <%= shixuns_controller.include?(params[:controller]) ? " active" : "" %>"><%= link_to "实训项目", shixuns_path %></li>
       <li class="<%= course_controller.include?(params[:controller]) ? " active" : "" %>"><%= link_to "教学课堂", "/classrooms" %></li>
+      <li class="pr <%= shixuns_controller.include?(params[:controller]) ? " active" : "" %>"><%= link_to "实践项目", shixuns_path %></li>
 
       <% careers = Career.published.order("created_at asc") %>
       <% if careers.present? %>
diff --git a/public/images/educoder/headNavLogo.png b/public/images/educoder/headNavLogo.png
index 8df93d54..9a4bf089 100644
Binary files a/public/images/educoder/headNavLogo.png and b/public/images/educoder/headNavLogo.png differ