diff --git a/app/views/layouts/_logined_header.html.erb b/app/views/layouts/_logined_header.html.erb
index bf1166021..bb99a5ea2 100644
--- a/app/views/layouts/_logined_header.html.erb
+++ b/app/views/layouts/_logined_header.html.erb
@@ -54,7 +54,7 @@
     <% name = name%>
 
     <%= form_tag({controller: :welcome, action: :search },:class=>'navHomepageSearchBox', method: :get) do %>
-      <input type="text" name="q" value="<%= name.nil? ? "" : name%>" id="navHomepageSearchInput" class="navHomepageSearchInput" placeholder="请输入关键词进行搜索"/>
+      <input type="text" name="q" value="<%= name.nil? ? "" : name%>" id="navHomepageSearchInput" class="navHomepageSearchInput" placeholder="请输入关键词进行搜索公开的课程，项目，用户，以及资源"/>
       <input type="hidden" name="search_type" id="type" value="all"/>
       <input type="text" style="display: none;"/>
       <a href="javascript:void(0);" class="homepageSearchIcon" onclick="search_in_header($(this));"></a>
diff --git a/app/views/layouts/_unlogin_header.html.erb b/app/views/layouts/_unlogin_header.html.erb
index 1f1fb9016..ba05cf50c 100644
--- a/app/views/layouts/_unlogin_header.html.erb
+++ b/app/views/layouts/_unlogin_header.html.erb
@@ -52,7 +52,7 @@
     <% name = name%>
 
     <%= form_tag({controller: :welcome, action: :search },:class=>'navHomepageSearchBox', method: :get) do %>
-        <input type="text" name="q" value="<%= name.nil? ? "" : name%>" id="navHomepageSearchInput"  class="navHomepageSearchInput" placeholder="请输入关键词进行搜索" onkeypress="search_in_header_I(event,$(this));"/>
+        <input type="text" name="q" value="<%= name.nil? ? "" : name%>" id="navHomepageSearchInput"  class="navHomepageSearchInput" placeholder="请输入关键词进行搜索公开的课程，项目，用户，以及资源" onkeypress="search_in_header_I(event,$(this));"/>
         <input type="hidden" name="search_type" id="type" value="all"/>
         <input type="text" style="display: none;"/>
         <a href="javascript:void(0);" class="homepageSearchIcon" onclick="search_in_header($(this));"></a>