diff --git a/app/api/mobile/apis/courses.rb b/app/api/mobile/apis/courses.rb
index ce02f4249..f7b03947c 100644
--- a/app/api/mobile/apis/courses.rb
+++ b/app/api/mobile/apis/courses.rb
@@ -240,6 +240,18 @@ module Mobile
           present :status, 0
         end
 
+        desc '课程学生'
+        params do
+          requires :token,type:String
+          requires :course_id,type:Integer,desc: '课程id'
+        end
+        get ":course_id/members" do
+          cs = CoursesService.new
+          count = cs.course_members params
+          present :data, count, with: Mobile::Entities::Member
+          present :status, 0
+        end
+
       end
     end
   end
diff --git a/app/api/mobile/entities/course.rb b/app/api/mobile/entities/course.rb
index 520f73384..50812b349 100644
--- a/app/api/mobile/entities/course.rb
+++ b/app/api/mobile/entities/course.rb
@@ -46,6 +46,7 @@ module Mobile
       course_expose :term
       course_expose :time
       course_expose :updated_at
+      course_expose :course_student_num
       expose :teacher, using: Mobile::Entities::User do |c, opt|
         if c.is_a? ::Course
           c.teacher
diff --git a/app/api/mobile/entities/member.rb b/app/api/mobile/entities/member.rb
new file mode 100644
index 000000000..837ec788a
--- /dev/null
+++ b/app/api/mobile/entities/member.rb
@@ -0,0 +1,33 @@
+module Mobile
+  module Entities
+    class Member < Grape::Entity
+      include ApplicationHelper
+      include ApiHelper
+      def self.member_expose(f)
+        expose f do |u,opt|
+          if u.is_a?(Hash) && u.key?(f)
+            u[f]
+          elsif u.is_a?(::Member)
+            if u.respond_to?(f)
+              u.send(f)
+            else
+              case f
+               when :student_id
+                u.user.user_extensions.student_id
+              end
+            end
+          end
+
+        end
+      end
+
+      expose :user, using: Mobile::Entities::User do |c, opt|
+        if c.is_a?(::Member)
+          c.user
+        end
+      end
+      member_expose :student_id
+      member_expose :score
+    end
+  end
+end
\ No newline at end of file
diff --git a/app/services/courses_service.rb b/app/services/courses_service.rb
index b992665d3..42bf8fe3f 100644
--- a/app/services/courses_service.rb
+++ b/app/services/courses_service.rb
@@ -169,7 +169,7 @@ class CoursesService
     unless (course.is_public == 1 ||  current_user.member_of_course?(course) || current_user.admin?)
       raise '403'
     end
-    {:course => course,:work_unit => work_unit, :img_url => url_to_avatar(course),:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course)}
+    {:course => course,:work_unit => work_unit, :img_url => url_to_avatar(course),:current_user_is_member => current_user.member_of_course?(course),:current_user_is_teacher => is_course_teacher(current_user,course),:course_student_num => course ? course.student.count.to_s : 0}
   end
 
   #创建课程
@@ -439,6 +439,11 @@ class CoursesService
      result
    end
 
+  # 课程学生列表
+  def course_members params
+    @all_members = student_homework_score(0,params[:course_id], 10,"desc")
+  end
+
   private
   def show_homework_info course,bid,current_user,is_course_teacher
     author_real_name = bid.author.lastname + bid.author.firstname
@@ -476,5 +481,52 @@ class CoursesService
   end
 
 
+  def student_homework_score(groupid,course_id, nums, score_sort_by)
+    #teachers = find_course_teachers(@course)
+    #start_from = start_from * nums
+    sql_select = ""
+    if groupid == 0
+      if nums == 0
+        sql_select = "SELECT members.*, SUM(homework_attaches.score) as score FROM members, homework_attaches
+            WHERE members.course_id = #{course_id} AND members.user_id in (SELECT students_for_courses.student_id FROM students_for_courses WHERE course_id = #{course_id}) AND members.user_id = homework_attaches.user_id
+        AND homework_attaches.bid_id in (SELECT bid_id FROM homework_for_courses WHERE course_id = #{course_id}) GROUP BY members.user_id
+        UNION all
+        SELECT members.*, 0 as  score FROM members,homework_attaches,students_for_courses WHERE members.course_id = #{course_id} AND
+        students_for_courses.course_id = #{course_id} and members.user_id = students_for_courses.student_id AND
+        members.user_id NOT IN (SELECT homework_attaches.user_id FROM homework_attaches WHERE homework_attaches.bid_id in (SELECT bid_id FROM homework_for_courses WHERE course_id = #{course_id} )
+        )
+        GROUP BY members.user_id ORDER BY score #{score_sort_by}"
+      else
+        sql_select = "SELECT members.*, SUM(homework_attaches.score) as score FROM members, homework_attaches
+            WHERE members.course_id = #{course_id} AND members.user_id in (SELECT students_for_courses.student_id FROM students_for_courses WHERE course_id = #{course_id}) AND members.user_id = homework_attaches.user_id
+        AND homework_attaches.bid_id in (SELECT bid_id FROM homework_for_courses WHERE course_id = #{course_id})  GROUP BY members.user_id
+        UNION all
+        SELECT members.*, 0 as  score FROM members,homework_attaches,students_for_courses WHERE members.course_id = #{course_id} AND
+        students_for_courses.course_id = #{course_id} and members.user_id = students_for_courses.student_id AND
+        members.user_id NOT IN (SELECT homework_attaches.user_id FROM homework_attaches WHERE homework_attaches.bid_id in (SELECT bid_id FROM homework_for_courses WHERE course_id = #{course_id} )
+        )
+        GROUP BY members.user_id ORDER BY score #{score_sort_by} " #limit #{start_from}, #{nums}"
+
+      end
+    else
+      sql_select = "SELECT members.*, SUM(homework_attaches.score) as score FROM members, homework_attaches
+        WHERE members.course_id = #{course_id} AND members.user_id in (SELECT students_for_courses.student_id FROM students_for_courses WHERE course_id = #{course_id}) AND members.user_id = homework_attaches.user_id
+        and members.course_group_id = #{groupid} AND homework_attaches.bid_id in (SELECT bid_id FROM homework_for_courses WHERE course_id = #{course_id})
+        GROUP BY members.user_id
+        UNION all
+        SELECT members.*, 0 as  score FROM members,homework_attaches,students_for_courses WHERE members.course_id = #{course_id}
+        and members.course_group_id = #{groupid} AND
+        students_for_courses.course_id = #{course_id} and members.user_id = students_for_courses.student_id AND
+        members.user_id NOT IN (SELECT homework_attaches.user_id FROM homework_attaches WHERE homework_attaches.bid_id in (SELECT bid_id FROM homework_for_courses WHERE course_id = #{course_id} )
+        )
+        GROUP BY members.user_id ORDER BY score #{score_sort_by}"
+    end
+    sql = ActiveRecord::Base.connection()
+    homework_scores = Member.find_by_sql(sql_select)
+    sql.close()
+
+    homework_scores
+  end
+
 
 end
\ No newline at end of file
diff --git a/app/views/repositories/show.html.erb b/app/views/repositories/show.html.erb
index 077bccdad..9d545d89a 100644
--- a/app/views/repositories/show.html.erb
+++ b/app/views/repositories/show.html.erb
@@ -34,9 +34,9 @@
 <div id="repos_git_more">
   <br>
   <div class=" c_dark f14">
-    <p>项目代码请设置好正确的编码方式（utf-8），否则中文会出现乱码</p>
-
-    <p>建立版本库文件夹，打开命令行执行如下：</p>
+    <p>项目代码请设置好正确的编码方式（utf-8），否则中文会出现乱码。</p>
+    <p>通过cmd命令提示符进入代码对应文件夹的根目录，假设当前用户的登录名为user，版本库名称为demo，需要操作的版本库分支为branch。
+       如果是首次提交代码，执行如下命令：</p>
   </div>
   <div class="repos_explain">
     <p>git init</p>
@@ -46,19 +46,19 @@
     <p>git commit -m "first commit"</p>
 
     <p>git remote add origin
-      http://xianbo_trustie2@repository.trustie.net/xianbo/trustie2.git
+      http://user_demo@repository.trustie.net/user/demo.git
     </p>
 
     <p>git config http.postBuffer 524288000 #设置本地post缓存为500MB</p>
 
-    <p>git push -u origin master:master</p>
+    <p>git push -u origin branch:branch</p>
   </div>
     <!--repos_explain end-->
   <div class="c_dark f14">
     <p>已经有本地库，还没有配置远程地址，打开命令行执行如下：</p>
   </div>
   <div class="repos_explain">
-    <p>git remote add origin http://xianbo_trustie2@repository.trustie.net/xianbo/trustie2.git</p>
+    <p>git remote add origin http://user_demo@repository.trustie.net/user/demo.git</p>
 
     <p>git add .</p>
 
@@ -66,14 +66,14 @@
 
     <p>git config http.postBuffer 524288000 #设置本地post缓存为500MB</p>
 
-    <p>git push -u origin master:master</p>
+    <p>git push -u origin branch:branch</p>
   </div>
     <!--repos_explain end-->
   <div class="c_dark f14">
     <p>已有远程地址，创建一个远程分支，并切换到该分支，打开命令行执行如下：</p>
   </div>
   <div class="repos_explain">
-    <p>git clone http://xianbo_trustie2@repository.trustie.net/xianbo/trustie2.git</p>
+    <p>git clone http://user_demo@repository.trustie.net/user/demo.git</p>
 
     <p>git push</p>
 
@@ -87,7 +87,7 @@
   </div>
   <div class="repos_explain">
     <p>git remote add trustie
-      http://xianbo_trustie2@repository.trustie.net/xianbo/trustie2.git
+      http://user_demo@repository.trustie.net/user/demo.git
     </p>
 
     <p>git add .</p>
@@ -96,7 +96,7 @@
 
     <p>git config http.postBuffer 524288000 #设置本地post缓存为500MB</p>
 
-    <p>git push -u trustie master:master</p>
+    <p>git push -u trustie branch:branch</p>
 
     <p><a href="/users/646" class="c_orange">李海</a>提供</p>
   </div>
diff --git a/db/migrate/20150505023015_add_index_to_homeworkattach_bid_id.rb b/db/migrate/20150505023015_add_index_to_homeworkattach_bid_id.rb
new file mode 100644
index 000000000..ce4d4499c
--- /dev/null
+++ b/db/migrate/20150505023015_add_index_to_homeworkattach_bid_id.rb
@@ -0,0 +1,5 @@
+class AddIndexToHomeworkattachBidId < ActiveRecord::Migration
+  def change
+    add_index(:homework_attaches,:bid_id)
+  end
+end
diff --git a/db/migrate/20150505023127_add_index_to_studentforcourse_student_id.rb b/db/migrate/20150505023127_add_index_to_studentforcourse_student_id.rb
new file mode 100644
index 000000000..d24e2f31e
--- /dev/null
+++ b/db/migrate/20150505023127_add_index_to_studentforcourse_student_id.rb
@@ -0,0 +1,5 @@
+class AddIndexToStudentforcourseStudentId < ActiveRecord::Migration
+  def change
+    add_index(:students_for_courses,:student_id)
+  end
+end
diff --git a/db/migrate/20150505023452_add_index_to_studentforcourse_course_id.rb b/db/migrate/20150505023452_add_index_to_studentforcourse_course_id.rb
new file mode 100644
index 000000000..99c0a640a
--- /dev/null
+++ b/db/migrate/20150505023452_add_index_to_studentforcourse_course_id.rb
@@ -0,0 +1,5 @@
+class AddIndexToStudentforcourseCourseId < ActiveRecord::Migration
+  def change
+    add_index(:students_for_courses,:course_id)
+  end
+end
diff --git a/db/migrate/20150505025003_add_index_to_homeworkforcourse_course_id.rb b/db/migrate/20150505025003_add_index_to_homeworkforcourse_course_id.rb
new file mode 100644
index 000000000..cd60a00af
--- /dev/null
+++ b/db/migrate/20150505025003_add_index_to_homeworkforcourse_course_id.rb
@@ -0,0 +1,5 @@
+class AddIndexToHomeworkattachCourseId < ActiveRecord::Migration
+  def change
+    add_index(:homework_for_courses,:course_id)
+  end
+end
diff --git a/db/migrate/20150505025537_add_index_to_homeworkforcourse_bid_id.rb b/db/migrate/20150505025537_add_index_to_homeworkforcourse_bid_id.rb
new file mode 100644
index 000000000..7504e8421
--- /dev/null
+++ b/db/migrate/20150505025537_add_index_to_homeworkforcourse_bid_id.rb
@@ -0,0 +1,5 @@
+class AddIndexToHomeworkforcourseBidId < ActiveRecord::Migration
+  def change
+    add_index(:homework_for_courses,:bid_id)
+  end
+end