diff --git a/app/controllers/users_controller.rb b/app/controllers/users_controller.rb
index e6ab0f431..fa0beb311 100644
--- a/app/controllers/users_controller.rb
+++ b/app/controllers/users_controller.rb
@@ -376,8 +376,8 @@ class UsersController < ApplicationController
       "show_changesets" => true
     }
        scope = User.logged.status(@status)
-       @search_by = params[:search_by] ? params[:search_by][:id] : 0
-       scope = scope.like(params[:name],"0") if params[:name].present?
+       @search_by = params[:search_by] ? params[:search_by] :"0"
+       scope = scope.like(params[:name], @search_by) if params[:name].present?
        @user_count = scope.count
        @user_pages = Paginator.new @user_count, @limit, params['page']
        @user_base_tag = params[:id] ? 'base_users':'users_base'
diff --git a/app/controllers/welcome_controller.rb b/app/controllers/welcome_controller.rb
index 94717a4ce..c023a0ba3 100644
--- a/app/controllers/welcome_controller.rb
+++ b/app/controllers/welcome_controller.rb
@@ -110,6 +110,7 @@ class WelcomeController < ApplicationController
   def search
     search_condition = params[:q] 
     search_type = params[:search_type].to_sym unless search_condition.blank?
+    search_by = params[:search_by]
 
     if search_type.nil? && params[:contests_search] && params[:name] != ""
       search_type  = :contests
@@ -127,11 +128,11 @@ class WelcomeController < ApplicationController
         when :contests
           redirect_to contests_url(:name => search_condition)
         when :users
-          redirect_to users_search_url(:name => search_condition)
+          redirect_to users_search_url(:name => search_condition,:search_by => search_by)
         when :users_teacher
-          redirect_to users_search_url(:name => search_condition, :role => :teacher)
+          redirect_to users_search_url(:name => search_condition, :search_by => search_by, :role => :teacher)
         when :users_student
-          redirect_to users_search_url(:name => search_condition, :role => :student)
+          redirect_to users_search_url(:name => search_condition, :search_by => search_by, :role => :student)
         else
           #redirect_to home_path, :alert => l(:label_sumbit_empty)
         (redirect_to home_url, :notice => l(:label_sumbit_empty);return) #if params[:name].blank?
diff --git a/app/views/welcome/_search_project.html.erb b/app/views/welcome/_search_project.html.erb
index fda9dae7c..196213636 100644
--- a/app/views/welcome/_search_project.html.erb
+++ b/app/views/welcome/_search_project.html.erb
@@ -3,8 +3,6 @@
 	(select_option << ['项目', 'projects']) if project_type == Project::ProjectType_project
 	(select_option << ['课程', 'courses']) if project_type == Project::ProjectType_course
 	select_option << ['用户', 'users']
-	#select_option << ['教师', 'users_teacher'],
-	#select_option << ['学生', 'users_student']
 %>
 <style type="text/css">
 form #q, form #search_type{
@@ -37,6 +35,29 @@ form #search_type{
 	text-indent: 0.01px;
 	text-overflow: '';
 }
+
+form #search_by
+{
+    font-size: 13px;
+    color: #363739;
+    border-top-right-radius: 5px;
+    border-bottom-right-radius: 5px;
+    border-bottom-left-radius: 0px;
+    border-top-left-radius: 0px;
+    border-left: 1px outset #83A9A9;
+    margin-left: -6px;
+    -webkit-appearance: none;
+    -moz-appearance: none;
+    text-indent: 0.01px;
+    text-overflow: '';
+    -moz-box-sizing: border-box;
+    box-sizing: border-box;
+    display: inline-block;
+    padding: 5px;
+    height: 33px;
+    display: none;
+}
+
 .search_widget{
 	display:inline-block;
 	border-radius: 5px;
@@ -46,11 +67,31 @@ form #search_type{
 }
 <%#完了把上面东西放到 .css 里%>
 </style>
+<script type="text/javascript">
+  function searchTypeChange()
+  {
+      if($("#search_type").val() == "users")
+      {
+          $("#search_by").show();
+      }
+      else
+      {
+          $("#search_by").hide();
+      }
+  }
+
+  function searchByChange()
+  {
+      $("#search_by_input").val($("#search_by").val());
+  }
+</script>
 <%= form_tag({controller: :welcome, action: :search }, method: :get) do %>
 <div class="project-search" style="float: right">
 	<div class='search_widget'>
 		<%= text_field_tag :q, nil, placeholder:'请输入要搜索的关键字',  :size => 27 %>
-		<%= select_tag(:search_type, options_for_select(select_option) ) %>
+        <input type="text" name="search_by_input" hidden="hidden;" id="search_by_input" value="0">
+		<%= select_tag(:search_type, options_for_select(select_option), :onchange => "searchTypeChange();" ) %>
+        <%= select_tag(:search_by,options_for_select([["昵称","0"],["姓名","1"],["邮箱","2"]]), :onchange => "searchByChange();" )  %>
 	</div>
 		<%#= hidden_field_tag 'project_type', project_type %>
 		<%= submit_tag l(:label_search), :class => "enterprise", :name => nil %>
diff --git a/app/views/welcome/course.html.erb b/app/views/welcome/course.html.erb
index 47433b30d..11f9c4e18 100644
--- a/app/views/welcome/course.html.erb
+++ b/app/views/welcome/course.html.erb
@@ -73,7 +73,7 @@
       <% end %>
     </div>
     <div class="search-bar" id="search-bar">
-      <%= render :partial => "search_course", :locals => {:project_type => Project::ProjectType_course} %>
+      <%= render :partial => "search_project", :locals => {:project_type => Project::ProjectType_course} %>
     </div>
     <div style="clear: both;"></div>
   </div>