diff --git a/app/models/user.rb b/app/models/user.rb
index a74c20751..259b9d04e 100644
--- a/app/models/user.rb
+++ b/app/models/user.rb
@@ -1064,6 +1064,17 @@ class User < Principal
     anonymous_user
   end
 
+  # refactor User model find function,
+  # return anonymous user when can not find user id = user_id
+  def self.find user_id
+    user = User.new
+    begin
+      user = super
+    rescue
+      user = self.anonymous
+    end
+    user
+  end
   # Salts all existing unsalted passwords
   # It changes password storage scheme from SHA1(password) to SHA1(salt + SHA1(password))
   # This method is used in the SaltPasswords migration and is to be kept as is
diff --git a/app/views/welcome/_search_all_results.html.erb b/app/views/welcome/_search_all_results.html.erb
index 51835106b..a714f53d2 100644
--- a/app/views/welcome/_search_all_results.html.erb
+++ b/app/views/welcome/_search_all_results.html.erb
@@ -1,31 +1,31 @@
 <% unless all_results.nil? || all_results.empty?%>
-<% all_results.each do |item|%>
-    <% case item.type %>
-     <% when 'user'%>
-        <ul class="searchContent">
-          <li class="fl"></li>
-          <li class="fl searchContentDes">
-            <ul class="fl">
-              <li class="f16 mb5"><a href="<%= user_path(item.id)%>" class="fontGrey3 fl">
-                <%= item.try(:highlight).try(:login) ? item.highlight.login[0].html_safe : item.login  %>
-                <%if item.firstname.present? || item.lastname.present?%>
-                (<%= item.try(:highlight).try(:lastname) ? item.highlight.lastname[0].html_safe : item.lastname%>
-                <%= item.try(:highlight).try(:firstname) ? item.highlight.firstname[0].html_safe : item.firstname  %>)
+    <% all_results.each do |item|%>
+        <% case item.type %>
+<% when 'user'%>
+            <ul class="searchContent">
+              <li class="fl"></li>
+              <li class="fl searchContentDes">
+                <ul class="fl">
+                  <li class="f16 mb5"><a href="<%= user_path(item.id)%>" class="fontGrey3 fl">
+                    <%= item.try(:highlight).try(:login) ? item.highlight.login[0].html_safe : item.login  %>
+                    <%if item.firstname.present? || item.lastname.present?%>
+                        (<%= item.try(:highlight).try(:lastname) ? item.highlight.lastname[0].html_safe : item.lastname%>
+                        <%= item.try(:highlight).try(:firstname) ? item.highlight.firstname[0].html_safe : item.firstname  %>)
                     <%end %>
-              </a>
-                <div class="mt5 fl"><%= image_tag("search_icon_03.png", :width=>"8", :height=>"16" ,:class=>"fl") %><span class="searchTag"><%= get_user_identity(User.find(item.id).user_extensions.identity) %></span></div>
-                <div class="cl"></div>
-              </li>
-              <li class="fontGrey3 mb5"><%= User.find(item.id).user_extensions && User.find(item.id).user_extensions.brief_introduction.present? ? User.find(item.id).user_extensions.brief_introduction : '这位童鞋很懒，什么也没有留下～'%></li>
-              <li class="f12 fontGrey2">
-                <span class="mr30">加入时间：<%= format_date( User.find(item.id).created_on)%></span><span class="mr30">
+                  </a>
+                    <div class="mt5 fl"><%= image_tag("search_icon_03.png", :width=>"8", :height=>"16" ,:class=>"fl") %><span class="searchTag"><%= get_user_identity(User.find(item.id).user_extensions.identity) %></span></div>
+                    <div class="cl"></div>
+                  </li>
+                  <li class="fontGrey3 mb5"><%= User.find(item.id).user_extensions && User.find(item.id).user_extensions.brief_introduction.present? ? User.find(item.id).user_extensions.brief_introduction : '这位童鞋很懒，什么也没有留下～'%></li>
+                  <li class="f12 fontGrey2">
+                    <span class="mr30">加入时间：<%= format_date( User.find(item.id).created_on)%></span><span class="mr30">
                  最后登陆时间：<%= format_date( User.find(item.id).last_login_on)%></span><span class="mr30">
                 <%= User.find(item.id).user_extensions.occupation.present? ? '单位：'+User.find(item.id).user_extensions.occupation : ''%></span></li>
+                </ul>
+              </li>
+              <div class="cl"></div>
             </ul>
-          </li>
-          <div class="cl"></div>
-        </ul>
-     <% when 'course'%>
+        <% when 'course'%>
             <ul class="searchContent">
               <li class="fl">
               </li>
@@ -38,24 +38,15 @@
                   </li>
                   <li class="fontGrey3 mb5"><%= item.try(:highlight).try(:description) ? item.highlight.description[0].html_safe : item.description %></li>
                   <li class="f12 fontGrey2">
-                    <%= course_teacher = User.where("id = ?", item.tea_id).first if item.tea_id? %>
-                    <% if course_teacher.nil? %>
-                        <span class="mr30">教师：无</span>
-                        <span class="mr30">授课时间：<%= item.time.to_s + item.term%></span>
-                        <span class="mr30">更新时间：<%= format_date(item.updated_at)%></span>
-                        <span class="mr30">单位：无</span>
-                    <%= else %>
-                        <span class="mr30">教师：<%= User.find(item.tea_id).realname %></span>
-                        <span class="mr30">授课时间：<%= item.time.to_s + item.term%></span>
-                        <span class="mr30">更新时间：<%= format_date(item.updated_at)%></span>
-                        <span class="mr30"><%= course_teacher.user_extensions.occupation.present? ? '单位：'+ course_teacher.user_extensions.occupation : ''%></span>
-                    <% end %>
-                  </li>
+                    <span class="mr30">教师：<%= User.find(item.tea_id).realname %></span>
+                    <span class="mr30">授课时间：<%= item.time.to_s + item.term%></span>
+                    <span class="mr30">更新时间：<%= format_date(item.updated_at)%></span>
+                    <span class="mr30"><%= User.find(item.tea_id).user_extensions.occupation.present? ? '单位：'+User.find(item.tea_id).user_extensions.occupation : ''%></span></li>
                 </ul>
               </li>
               <div class="cl"></div>
             </ul>
-      <% when 'attachment'%>
+        <% when 'attachment'%>
             <ul class="searchContent">
               <li class="fl">
               </li>
@@ -65,8 +56,7 @@
                     <div class="mt5 fl"><%= image_tag("search_icon_03.png", :width=>"8", :height=>"16" ,:class=>"fl") %><span class="searchTag">资源</span></div>
                     <div class="cl"></div>
                   </li>
-                  <%= item_author = User.where("id = ?", item.author_id).first if item.author_id? %>
-                  <li class="f12 fontGrey2"><span class="mr30">发布者：<%= item_author.nil? ? '无' : item_author.login%>（<%= item_author.realname  unless item_author.nil? %>）</span>
+                  <li class="f12 fontGrey2"><span class="mr30">发布者：<%= User.find(item.author_id).login%>（<%= User.find(item.author_id).realname%>）</span>
                     <!--<span class="mr30">职称：<%#= get_technical_title User.find(item.author_id) %></span>-->
                     <span class="mr30">发布时间：<%= format_date(item.created_on)%></span>
                     <span class="mr30">下载次数：<%= item.downloads%>次</span>
@@ -75,7 +65,7 @@
               </li>
               <div class="cl"></div>
             </ul>
-      <% when 'project'%>
+        <% when 'project'%>
             <ul class="searchContent">
               <li class="fl">
               </li>
@@ -86,8 +76,7 @@
                     <div class="cl"></div>
                   </li>
                   <li class="fontGrey3 mb5"><%= item.try(:highlight).try(:description) ? item.highlight.description[0].html_safe : item.description%></li>
-                  <%= project_admin = User.where("id = ?", item.user_id).first if item.user_id? %>
-                  <li class="f12 fontGrey2"><span class="mr30">管理人员：<%=  project_admin.nil? ? '无' : project_admin.login %></span><span class="mr30">更新时间:<%= date_format_local( Project.find(item.id).updated_on) %></span></li>
+                  <li class="f12 fontGrey2"><span class="mr30">管理人员：<%=  item.user_id ?  User.find(item.user_id).login : '无' %></span><span class="mr30">更新时间:<%= date_format_local( Project.find(item.id).updated_on) %></span></li>
                 </ul>
               </li>
               <div class="cl"></div>
@@ -103,14 +92,13 @@
                     <div class="cl"></div>
                   </li>
                   <li class="fontGrey3 mb5"><%= item.try(:highlight).try(:content) ? item.highlight.content[0].html_safe : item.content.html_safe%></li>
-                  <%= memo_author = User.where("id = ?", item.author_id).first if item.author_id? %>
-                  <li class="f12 fontGrey2"><span class="mr30">发帖人：<%=  memo_author.nil? ? '无' : memo_author.login   %></span><span class="mr30">更新时间:<%= format_date( item.updated_at) %></span></li>
+                  <li class="f12 fontGrey2"><span class="mr30">发帖人：<%=  item.author_id ?  User.find(item.author_id).login : '无' %></span><span class="mr30">更新时间:<%= format_date( item.updated_at) %></span></li>
                 </ul>
               </li>
               <div class="cl"></div>
             </ul>
-    <%end %>
-<% end %>
+        <%end %>
+    <% end %>
     <div class="pageRoll">
       <%= paginate all_results,:params => {:controller => 'welcome', :action => 'search',:search_type=>'all'}%>
     </div>