diff --git a/app/controllers/repositories_controller.rb b/app/controllers/repositories_controller.rb
index 752df72ee..208a8bdb0 100644
--- a/app/controllers/repositories_controller.rb
+++ b/app/controllers/repositories_controller.rb
@@ -463,8 +463,6 @@ update
       data = graph_author_commits_per_month(@repository)
     when "author_commits_six_month"
       data = author_commits_six_month(@repository)
-    when "author_qoc_per_author"
-      data = graph_author_qoc_per_author(@repository)
     when "author_code_six_months"
       data = author_code_six_month(@repository)
     end
diff --git a/app/views/repositories/stats.html.erb b/app/views/repositories/stats.html.erb
index ba14e18b1..b5283629c 100644
--- a/app/views/repositories/stats.html.erb
+++ b/app/views/repositories/stats.html.erb
@@ -13,25 +13,13 @@
 <p style="padding-top: 50px;">
   <%= tag("embed", :width => 670, :height => 400, :type => "image/svg+xml", :src => url_for(:controller => 'repositories', :action => 'graph', :id => @project, :repository_id => @repository.identifier_param, :graph => "author_commits_per_month")) %>
 </p>
-<p style="padding-top: 50px;">
-  <%# 用户每月提交代码量 %>
-  <%= tag("embed", :width => 670, :height => 400, :type => "image/svg+xml", :src => url_for(:controller => 'repositories', :action => 'graph', :id => @project, :repository_id => @repository.identifier_param, :graph => "author_qoc_per_author")) %>
-</p>
 <p style="padding-top: 50px;">
   <%# 用户最近六个月的提交次数 %>
   <%= tag("embed", :width => 670, :height => 400, :type => "image/svg+xml", :src => url_for(:controller => 'repositories', :action => 'graph', :id => @project, :repository_id => @repository.identifier_param, :graph => "author_commits_six_month")) %>
 </p>
-<p style="padding-top: 50px;">
-  <%# 用户最近一年的提交次数 %>
-  <%= tag("embed", :width => 670, :height => 400, :type => "image/svg+xml", :src => url_for(:controller => 'repositories', :action => 'graph', :id => @project, :repository_id => @repository.identifier_param, :graph => "author_qoc_per_author")) %>
-</p>
 <p style="padding-top: 50px;">
   <%# 用户最近六个月的代码量 %>
   <%= tag("embed", :width => 670, :height => 400, :type => "image/svg+xml", :src => url_for(:controller => 'repositories', :action => 'graph', :id => @project, :repository_id => @repository.identifier_param, :graph => "author_code_six_months")) %>
 </p>
-<p style="padding-top: 50px;">
-  <%# 用户最近一年的代码量 %>
-  <%= tag("embed", :width => 670, :height => 400, :type => "image/svg+xml", :src => url_for(:controller => 'repositories', :action => 'graph', :id => @project, :repository_id => @repository.identifier_param, :graph => "author_code_year")) %>
-</p>
 <p><%= link_to l(:button_back), :action => 'show', :id => @project %></p>
 <% html_title(l(:label_repository), l(:label_statistics)) -%>