diff --git a/Gemfile b/Gemfile
index 2838fdd..482f7da 100644
--- a/Gemfile
+++ b/Gemfile
@@ -3,6 +3,7 @@ source 'https://rubygems.org'
 #ruby-gemset=yochigaya
 
 gem 'rails', '~> 4.0.0'
+gem 'ruby_cowsay'
 
 group :development, :test do
   gem 'sqlite3'
diff --git a/app/controllers/static_pages_controller.rb b/app/controllers/static_pages_controller.rb
index c76b925..942883a 100644
--- a/app/controllers/static_pages_controller.rb
+++ b/app/controllers/static_pages_controller.rb
@@ -1,7 +1,13 @@
 class StaticPagesController < ApplicationController
   def home
+    @cowsay = Cowsay.new
   end
 
   def help
   end
+
+  def cowsay
+    words = %w(seito sueyoshi)
+    @cowsay = Cowsay.new(word: words.sample)
+  end
 end
diff --git a/app/models/cowsay.rb b/app/models/cowsay.rb
new file mode 100644
index 0000000..b9bcc23
--- /dev/null
+++ b/app/models/cowsay.rb
@@ -0,0 +1,11 @@
+require 'ruby_cowsay'
+
+class Cowsay
+  include ActiveModel::Model
+
+  attr_accessor :word
+
+  def exec
+    Cow.new.say(word)
+  end
+end
diff --git a/app/views/static_pages/cowsay.html.erb b/app/views/static_pages/cowsay.html.erb
new file mode 100644
index 0000000..5d44b71
--- /dev/null
+++ b/app/views/static_pages/cowsay.html.erb
@@ -0,0 +1,7 @@
+<%= form_for @cowsay, url:"/static_pages/cowsay" do |f| %>
+  <%= f.submit value="ボタン" %>
+<% end %>
+
+<pre>
+  <%= @cowsay.exec %>
+</pre>
diff --git a/app/views/static_pages/home.html.erb b/app/views/static_pages/home.html.erb
index 93338e4..d120049 100644
--- a/app/views/static_pages/home.html.erb
+++ b/app/views/static_pages/home.html.erb
@@ -1,3 +1,3 @@
-<form>
-  <button>ボタン</button>
-</form>
+<%= form_for @cowsay, url:"static_pages/cowsay" do |f| %>
+  <%= f.submit 'ボタン' %>
+<% end -%>
diff --git a/config/routes.rb b/config/routes.rb
index a55bd23..8dd2332 100644
--- a/config/routes.rb
+++ b/config/routes.rb
@@ -1,6 +1,7 @@
 Yochigaya::Application.routes.draw do
   root 'static_pages#home'
   get 'static_pages/help'
+  post 'static_pages/cowsay'
   # The priority is based upon order of creation: first created -> highest priority.
   # See how all your routes lay out with "rake routes".