diff --git a/app/controllers/competition_teams_controller.rb b/app/controllers/competition_teams_controller.rb
index 5e76d263..06d504b2 100644
--- a/app/controllers/competition_teams_controller.rb
+++ b/app/controllers/competition_teams_controller.rb
@@ -51,7 +51,7 @@ class CompetitionTeamsController < ApplicationController
     end
 
     condition = "%#{params[:search].strip}%".gsub(" ","")
-    @teachers = User.joins(:user_extensions).where("status = 1 and LOWER(concat(lastname, firstname, login, nickname)) LIKE '#{condition}' and user_extensions.identity = 0")
+    @teachers = User.joins(:user_extensions).where("status = 1 and LOWER(concat(lastname, firstname, login, nickname)) LIKE '#{condition}' and user_extensions.identity = 0").limit(20)
   end
 
   def search_non_user
@@ -71,7 +71,7 @@ class CompetitionTeamsController < ApplicationController
     end
     user_ids = user_ids.length > 0 ? "(" + user_ids.uniq.join(',') +  ")" : "(-1)"
     condition = "%#{params[:search].strip}%".gsub(" ","")
-    @users = User.joins(:user_extensions).where("users.id not in #{user_ids} and status = 1 and user_extensions.identity = 1 and LOWER(concat(lastname, firstname, login, nickname)) LIKE '#{condition}'")
+    @users = User.joins(:user_extensions).where("users.id not in #{user_ids} and status = 1 and user_extensions.identity = 1 and LOWER(concat(lastname, firstname, login, nickname)) LIKE '#{condition}'").limit(20)
   end
 
   def create
diff --git a/app/views/competitions/_competitions_name.html.erb b/app/views/competitions/_competitions_name.html.erb
index a00c90a4..ab7f3253 100644
--- a/app/views/competitions/_competitions_name.html.erb
+++ b/app/views/competitions/_competitions_name.html.erb
@@ -17,15 +17,6 @@
                 <img src="/images/educoder/competitionslog.png" height="600px" width="600px" />
                 <img height="600px" width="600px" src="/images/educoder/applys.png" />
             </div>
-            <!--第三方账号登录-->
-            <!--<div class="mt10 edu-txt-center">
-              <p class="color-grey-9">第三方账号登录</p>
-              <div class="mt15">
-                <a href="javascript:void(0)" class="margin15"><img src="/images/educoder/weixin.png" class="radius"/></a>
-                <a href="javascript:void(0)" class="margin15"><img src="/images/educoder/QQ.png" class="radius"/></a>
-                <a href="javascript:void(0)" class="margin15"><img src="/images/educoder/weibo.png" class="radius"/></a>
-              </div>
-            </div>-->
         </div>
     </div>
 </div>
diff --git a/app/views/layouts/_logined_header.html.erb b/app/views/layouts/_logined_header.html.erb
index 9d1c9586..c36e2bc3 100644
--- a/app/views/layouts/_logined_header.html.erb
+++ b/app/views/layouts/_logined_header.html.erb
@@ -23,7 +23,7 @@
         <img class="roundedRectangles" src="/images/educoder/roundedRectangle.png"/>
       </li>
       <li class="<%= params[:controller] == "libraries" ? " active" : "" %>"><%= link_to "教学案例", libraries_path %></li>
-      <li class="<%= params[:controller] == "project_packages" ? " active" : "" %>"><%= link_to "众包", project_packages_path %></li>
+      <li class="<%= params[:controller] == "project_packages" ? " active" : "" %>"><%= link_to "众包任务", project_packages_path %></li>
       <li class="<%= params[:controller] == "forums" ? " active" : "" %>"><%= link_to "交流问答", forums_path %></li>
       <% if User.current.ec_school.present? %>
         <li class="<%= ecs_controller.include?(params[:controller]) ? " active" : "" %>" id="ec_banner">
diff --git a/app/views/layouts/_unlogin_header.html.erb b/app/views/layouts/_unlogin_header.html.erb
index 8263b5cd..b69a87ec 100644
--- a/app/views/layouts/_unlogin_header.html.erb
+++ b/app/views/layouts/_unlogin_header.html.erb
@@ -24,7 +24,7 @@
         <img class="roundedRectangles" src="/images/educoder/roundedRectangle.png"/>
       </li>
       <li class="<%= params[:controller] == "libraries" ? " active" : "" %>"><%= link_to "教学案例", libraries_path %></li>
-      <li class="<%= params[:controller] == "project_packages" ? " active" : "" %>"><%= link_to "众包", project_packages_path %></li>
+      <li class="<%= params[:controller] == "project_packages" ? " active" : "" %>"><%= link_to "众包任务", project_packages_path %></li>
       <li class="<%= params[:controller] == "forums" ? " active" : "" %>"><%= link_to "交流问答", forums_path %></li>
       <!--<li><%#= link_to "活动竞赛", competitions_path %></li>-->
     </ul>