diff --git a/.gitignore b/.gitignore
index 061314adc..f1eed7367 100644
--- a/.gitignore
+++ b/.gitignore
@@ -17,3 +17,4 @@
 /config/configuration.yml
 .rbenv-gemsets
 .DS_Store
+public/api_doc/
diff --git a/Gemfile b/Gemfile
index 34a1a7956..1fe5b6c0f 100644
--- a/Gemfile
+++ b/Gemfile
@@ -20,6 +20,7 @@ gem "builder", "3.0.0"
 gem 'acts-as-taggable-on', '2.4.1'
 
 group :development do
+  gem 'grape-swagger'
   gem 'puma'
   gem 'better_errors', path: 'lib/better_errors'
   gem 'rack-mini-profiler', path: 'lib/rack-mini-profiler'
diff --git a/Gemfile.lock b/Gemfile.lock
index 377ded53e..95ea5b6e2 100644
--- a/Gemfile.lock
+++ b/Gemfile.lock
@@ -110,6 +110,9 @@ GEM
     grape-entity (0.4.4)
       activesupport
       multi_json (>= 1.3.2)
+    grape-swagger (0.8.0)
+      grape
+      grape-entity
     guard (2.6.1)
       formatador (>= 0.2.4)
       listen (~> 2.7)
@@ -307,6 +310,7 @@ DEPENDENCIES
   fastercsv (~> 1.5.0)
   grape (~> 0.9.0)
   grape-entity
+  grape-swagger
   guard-rails (~> 0.5.3)
   guard-spork (~> 1.5.1)
   guard-test (~> 1.0.0)
diff --git a/app/api/mobile/api.rb b/app/api/mobile/api.rb
index b540c73d3..64016458e 100644
--- a/app/api/mobile/api.rb
+++ b/app/api/mobile/api.rb
@@ -27,7 +27,9 @@ module Mobile
     mount Apis::Auth
     mount Apis::Users
     mount Apis::Courses
+    mount Apis::Watches
 
+    add_swagger_documentation ({api_version: 'v1', base_path: '/api'})
   end
 end
 
diff --git a/app/api/mobile/apis/auth.rb b/app/api/mobile/apis/auth.rb
index fa6fec6e2..ae233a853 100644
--- a/app/api/mobile/apis/auth.rb
+++ b/app/api/mobile/apis/auth.rb
@@ -10,12 +10,12 @@ module Mobile
   module Apis
     class Auth < Grape::API
       resource :auth do
-        desc "Creates and returns access_token if valid login"
+        desc "用户登录"
         params do
           requires :login, type: String, desc: 'Username or email'
           requires :password, type: String, desc: 'Password'
         end
-        post :login do 
+        post do
           user,last_logon = ::User.try_to_login(params[:login], params[:password])
           if user
             ::ApiKey.delete_all(user_id: user.id)
@@ -27,6 +27,17 @@ module Mobile
             {status: 1, message: 'Unauthorized.'}
           end
         end
+
+        desc "用户登出"
+        params do
+          requires :token, type: String
+        end
+        delete do
+          authenticate!
+          ::ApiKey.delete_all(user_id: current_user.id)
+          {status: 0}
+        end
+
       end
     end
   end
diff --git a/app/api/mobile/apis/courses.rb b/app/api/mobile/apis/courses.rb
index 1084e8cbc..9aeea5176 100644
--- a/app/api/mobile/apis/courses.rb
+++ b/app/api/mobile/apis/courses.rb
@@ -2,11 +2,11 @@ module Mobile
   module Apis
     class Courses < Grape::API
       resource :courses do
-        desc "get all courses"
+        desc "获取所有课程"
         params do
-          optional :school_id, type: Integer, desc: 'school number'
-          requires :per_page_count, type: Integer
-          requires :page, type: Integer, desc: 'current page no'
+          optional :school_id, type: Integer, desc: '传入学校id,返回该学校课程列表'
+          requires :per_page_count, type: Integer, desc: '每页总数'
+          requires :page, type: Integer, desc: '当前页码'
         end
         get do
           cs = CoursesService.new
@@ -15,7 +15,7 @@ module Mobile
           present :status, 0
         end
 
-        desc "Return a course"
+        desc "返回单个课程"
         params do
           requires :id, type: Integer
         end
diff --git a/app/api/mobile/apis/users.rb b/app/api/mobile/apis/users.rb
index 9b5bf8c73..d05809726 100644
--- a/app/api/mobile/apis/users.rb
+++ b/app/api/mobile/apis/users.rb
@@ -2,12 +2,8 @@ module Mobile
   module Apis
     class Users < Grape::API
       resource :users do
-        desc "get all users"
-        get do
-          ['hello']
-        end
 
-        desc "add a user"
+        desc "注册用户"
         params do
           requires :login, type: String, desc: 'username'
           requires :mail, type: String, desc: 'mail'
@@ -27,8 +23,9 @@ module Mobile
         end
 
 
-        desc "modify user"
+        desc "修改用户"
         params do
+          requires :token, type: String
           #optional :file, type: File, desc: 'avatar'
           optional :occupation, type: String
           optional :brief_introduction, type: String
@@ -40,7 +37,7 @@ module Mobile
           authenticate!
           us = UsersService.new
           begin
-            ue = us.edit_user params
+            ue = us.edit_user params.merge(id: current_user.id)
             {status: 0, data: ue}
           rescue => e
             {status: 1, message: e.message}
diff --git a/app/api/mobile/apis/watches.rb b/app/api/mobile/apis/watches.rb
new file mode 100644
index 000000000..0715ff4a2
--- /dev/null
+++ b/app/api/mobile/apis/watches.rb
@@ -0,0 +1,53 @@
+module Mobile
+  module Apis
+    class Watches < Grape::API
+      resource :watches do
+
+        desc "获取所有关注"
+        params do
+          requires :token, type: String
+        end
+        get do
+          authenticate!
+          ws = UsersService.new
+          ws.user_watcher(id: current_user.id)
+        end
+
+
+        desc "关注某人"
+        params do
+          requires :token, type: String
+          requires :object_id, type: Integer, desc: '关注的用户的id'
+        end
+        post do
+          authenticate!
+          ws = WatchesService.new
+          begin
+            o = ws.watch(params.merge({current_user_id:current_user.id, object_type:'user' }) )
+            {status:0 , data: o}
+          rescue =>e
+            {status:1, message: e.message}
+          end
+        end
+
+
+        desc "取消关注"
+        params do
+          requires :token, type: String
+          requires :object_id, type: Integer, desc: '取消关注的用户的id'
+        end
+        delete do
+          authenticate!
+          ws = WatchesService.new
+          begin
+            ws.unwatch(params.merge({current_user_id:current_user.id, object_type:'user' }) )
+            {status:0}
+          rescue =>e
+            {status:1, message: e.message}
+          end
+        end
+
+      end
+    end
+  end
+end
\ No newline at end of file
diff --git a/app/controllers/watchers_controller.rb b/app/controllers/watchers_controller.rb
index 096e44f06..f6d01a03d 100644
--- a/app/controllers/watchers_controller.rb
+++ b/app/controllers/watchers_controller.rb
@@ -17,7 +17,7 @@
 class WatchersController < ApplicationController
   before_filter :require_login#, :find_watchables, :only => [:watch, :unwatch]
   def watch
-    s = Service.new
+    s = WatchesService.new
     watchables = s.watch params.merge(:current_user_id => User.current.id)
     respond_to do |format|
       format.html { redirect_to_referer_or {render :text => (true ? 'Watcher added.' : 'Watcher removed.'), :layout => true}}
@@ -33,7 +33,7 @@ class WatchersController < ApplicationController
   end
 
   def unwatch
-    s = Service.new
+    s = WatchesService.new
     watchables = s.unwatch  params.merge(:current_user_id => User.current.id)
     respond_to do |format|
       format.html { redirect_to_referer_or {render :text => (false ? 'Watcher added.' : 'Watcher removed.'), :layout => true}}
diff --git a/app/services/service.rb b/app/services/watches_service.rb
similarity index 96%
rename from app/services/service.rb
rename to app/services/watches_service.rb
index 413d9bfb8..2b9bed3cd 100644
--- a/app/services/service.rb
+++ b/app/services/watches_service.rb
@@ -1,4 +1,4 @@
-class Service
+class WatchesService
   def watch params
     @current_user = User.find(params[:current_user_id])
     @watchables = find_watchables params