diff --git a/app/models/course.rb b/app/models/course.rb
index 1f0cb0979..b2da58a81 100644
--- a/app/models/course.rb
+++ b/app/models/course.rb
@@ -5,7 +5,7 @@ class Course < ActiveRecord::Base
   STATUS_CLOSED     = 5
   STATUS_ARCHIVED   = 9
   
-  attr_accessible :code, :extra, :name, :state, :tea_id, :time , :location, :state, :term, :password,:is_public,:description,:class_period
+  attr_accessible :code, :extra, :name, :state, :tea_id, :time , :location, :state, :term, :password,:is_public,:description,:class_period, :open_student
   belongs_to :project, :class_name => 'Course', :foreign_key => :extra, primary_key: :identifier
   belongs_to :teacher, :class_name => 'User', :foreign_key => :tea_id  # 定义一个方法teacher，该方法通过tea_id来调用User表
   belongs_to :school, :class_name => 'School', :foreign_key => :school_id #定义一个方法school，该方法通过school_id来调用School表
@@ -52,7 +52,8 @@ class Course < ActiveRecord::Base
   'term',
   'is_public',
   'description',
-  'class_period'
+  'class_period',
+  'open_student'
 
   acts_as_customizable
 
diff --git a/app/views/courses/_course_form.html.erb b/app/views/courses/_course_form.html.erb
index 4324c5d47..cd8c71132 100644
--- a/app/views/courses/_course_form.html.erb
+++ b/app/views/courses/_course_form.html.erb
@@ -110,7 +110,13 @@
     <%= f.check_box :is_public, :style => "margin-left:10px;" %>
     <%= l(:label_course_public_info) %>
   </em>
-</p><!-- modified by bai -->
+</p>
+<p style="margin-left:-10px;">
+  <em style="color: #888888;display: block;font-size: 90%;font-style: normal;">
+    <%= f.check_box :open_student, :style => "margin-left:10px;" %>
+    <%= l(:label_course_open_student_info) %>
+  </em>
+</p>
 <p style="display:none;"><%= f.text_field :course_type, :value => 1 %></p>
 <%= wikitoolbar_for 'course_description' %>
 <% @course.custom_field_values.each do |value| %>
diff --git a/app/views/layouts/base_courses.html.erb b/app/views/layouts/base_courses.html.erb
index 04249b3bc..714f3f5f7 100644
--- a/app/views/layouts/base_courses.html.erb
+++ b/app/views/layouts/base_courses.html.erb
@@ -121,7 +121,7 @@
             <% end%>
           </td>
           <td class="font_index">
-            <% if User.current.member_of_course?(@course) %>
+            <% if (User.current.logged? && @course.open_student == 1) || (User.current.member_of_course?(@course)) %>
                 <%= link_to "#{studentCount(@course)}", course_member_path(@course, :role => 2), :course => '1' %>
             <% else %>
                 <span>
diff --git a/config/locales/zh.yml b/config/locales/zh.yml
index 97dceb192..ef0af8ba1 100644
--- a/config/locales/zh.yml
+++ b/config/locales/zh.yml
@@ -288,6 +288,7 @@ zh:
   field_class_period: 学时
   field_code: 学分
   field_is_public: 公开
+  field_open_student: 学生列表公开
   field_parent: 上级项目
   field_is_in_roadmap: 在路线图中显示
   field_login: 昵称
@@ -1799,6 +1800,7 @@ zh:
   label_course_join_student: 加入课程
   label_public_info: （打钩为公开，不打钩则不公开，若不公开，仅项目成员可见该项目。）
   label_course_public_info: （打钩为公开，不打钩则不公开，若不公开，仅课程成员可见该课程。）
+  label_course_open_student_info: （打钩为“学生列表公开”，不打钩为不公开，若不公开，则课程外部人员看不到学生列表）
   label_course_view_student: 查看其他课程
   label_course_student: 学生
   label_homework: 课程作业
diff --git a/config/routes.rb b/config/routes.rb
index 9d0a945c0..a8c5afb96 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -157,7 +157,7 @@ RedmineApp::Application.routes.draw do
   resources :forums do
     collection do
       match 'search_forum', :via => [:get, :post]
-  
+
     end
     member do
       post 'create_memo'