diff --git a/app/controllers/homework_attach_controller.rb b/app/controllers/homework_attach_controller.rb
index a3a484079..ef0e99452 100644
--- a/app/controllers/homework_attach_controller.rb
+++ b/app/controllers/homework_attach_controller.rb
@@ -41,7 +41,7 @@ class HomeworkAttachController < ApplicationController
     end
     @homework.save
     @hoemwork_users = users_for_homework(@homework)
-    @members = members_for_homework(@homework,@hoemwork_users)
+    @members = members_for_homework(@homework,@hoemwork_users,params[:q])
     @members = paginateHelper @members,10
     respond_to do |format|
       format.js
@@ -54,7 +54,7 @@ class HomeworkAttachController < ApplicationController
     homework_user = @homework.homework_users.where("user_id = #{params[:user_id]}").first
     homework_user.destroy
     @hoemwork_users = users_for_homework(@homework)
-    @members = members_for_homework(@homework,@hoemwork_users)
+    @members = members_for_homework(@homework,@hoemwork_users,params[:q])
     @members = paginateHelper @members,10
     respond_to do |format|
       format.js
@@ -126,11 +126,11 @@ class HomeworkAttachController < ApplicationController
 
   #获取作业成员的集合
   def get_homework_member_list
-    @homework = HomeworkAttach.includes(:homework_users).includes(:user).find(params[:bid_id])
+    @homework = HomeworkAttach.find(params[:bid_id])
     course = @homework.bid.courses.first
     if User.current.admin? || User.current.member_of?(course)
       @hoemwork_users = users_for_homework(@homework)
-      @members = members_for_homework(@homework,@hoemwork_users)
+      @members = members_for_homework(@homework,@hoemwork_users,params[:q])
       #该课程的学生的集合
       #@members = course.members.joins(:member_roles).where("member_roles.role_id IN (:role_id)", {:role_id => [5, 10]})
       @members = paginateHelper @members,10
@@ -150,16 +150,16 @@ class HomeworkAttachController < ApplicationController
   #获取可选成员列表
   #homework：作业
   #users：该作业所有成员
-  def members_for_homework homework,users
-    homework.bid.courses.first.members.joins(:member_roles).where("member_roles.role_id IN (:role_id) and user_id not in (:users)", {:role_id => [5, 10],:users => users})
+  def members_for_homework homework,users,q
+    homework.bid.courses.first.members.joins(:member_roles).where("member_roles.role_id IN (:role_id) and user_id not in (:users)", {:role_id => [5, 10],:users => users}).joins(:user).where("users.login like '%#{q}%'")
   end
 
   def edit
-    @homework = HomeworkAttach.includes(:homework_users).includes(:user).find(params[:id])
+    @homework = HomeworkAttach.find(params[:id])
     if User.current.admin? || User.current.member_of?(@homework.bid.courses.first)
       #@members = @homework.bid.courses.first.members.joins(:member_roles).where("member_roles.role_id IN (:role_id)", {:role_id => [5, 10]})
       @hoemwork_users = users_for_homework(@homework)
-      @members = members_for_homework(@homework,@hoemwork_users)
+      @members = members_for_homework(@homework,@hoemwork_users,params[:q])
       @members = paginateHelper @members,10
     else
       render_403 :message => :notice_not_authorized
diff --git a/app/views/homework_attach/_homework_member.html.erb b/app/views/homework_attach/_homework_member.html.erb
index a372f105f..c8e3bfbd2 100644
--- a/app/views/homework_attach/_homework_member.html.erb
+++ b/app/views/homework_attach/_homework_member.html.erb
@@ -34,6 +34,7 @@
       <fieldset>
         <legend><%= l(:label_member_new) %></legend>
         <p><%= label_tag "principal_search", l(:label_principal_search) %><%= text_field_tag 'principal_search', nil %></p>
+        <%= javascript_tag "observeSearchfield('principal_search', null, '#{ escape_javascript get_homework_member_list_homework_attach_index_path(:q => params[:q], :bid_id => params[:id]||homework, :format => 'js') }')" %>
         <div id="principals_for_new_member">
           <%= render_new_members_for_homework(members) %>
         </div>