diff --git a/src/Broadcast/Broadcast.php b/src/Broadcast/Broadcast.php
new file mode 100755
index 000000000..88920f14c
--- /dev/null
+++ b/src/Broadcast/Broadcast.php
@@ -0,0 +1,129 @@
+<?php
+
+/*
+ * This file is part of the EasyWeChat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+/**
+ * Broadcast.php.
+ *
+ * @author    overtrue <i@overtrue.me>
+ * @copyright 2015 overtrue <i@overtrue.me>
+ *
+ * @link      https://github.com/overtrue
+ * @link      http://overtrue.me
+ */
+
+namespace EasyWeChat\Broadcast;
+
+use EasyWeChat\Core\AbstractAPI;
+use EasyWeChat\Core\Exceptions\HttpException;
+
+/**
+ * Class Broadcast.
+ */
+class Broadcast extends AbstractAPI
+{
+    const API_SEND_BY_GROUP = 'https://api.weixin.qq.com/cgi-bin/message/mass/sendall';
+    const API_SEND_BY_OPENID = 'https://api.weixin.qq.com/cgi-bin/message/mass/send';
+    const API_DELETE = 'https://api.weixin.qq.com/cgi-bin/message/mass/delete';
+    const API_PREVIEW = 'https://api.weixin.qq.com/cgi-bin/message/mass/preview';
+    const API_GET = 'http://api.weixin.qq.com/cgi-bin/message/mass/get';
+
+    const PREVIEW_BY_OPENID = 'touser';
+    const PREVIEW_BY_WXH = 'towxname';
+
+    const MSG_TYPE_TEXT = 'text'; // 文本
+    const MSG_TYPE_NEWS = 'news'; // 图文
+    const MSG_TYPE_VOICE = 'voice'; // 语音
+    const MSG_TYPE_IMAGE = 'image'; // 图片
+    const MSG_TYPE_VIDEO = 'video'; // 视频
+    const MSG_TYPE_CARD = 'card'; // 卡券
+
+    /**
+     * Send a message.
+     *
+     * @param string $msgType message type
+     * @param mixed $message message
+     * @param mixed $to
+     *
+     * @return mixed
+     */
+    public function send($msgType, $message, $to = null)
+    {
+        $message = (new MessageBuilder())->msgType($msgType)->message($message)->to($to)->build();
+
+        $api = is_array($to) ? self::API_SEND_BY_OPENID : self::API_SEND_BY_GROUP;
+
+        return $this->post($api, $message);
+    }
+
+    /**
+     * Preview a message.
+     *
+     * @param string $msgType message type
+     * @param mixed $message message
+     * @param string $to
+     * @param string $by
+     *
+     * @return mixed
+     */
+    public function preview($msgType, $message, $to, $by = self::PREVIEW_BY_OPENID)
+    {
+        $message = (new MessageBuilder())->msgType($msgType)->message($message)->to($to)->buildPreview($by);
+
+        return $this->post(self::API_PREVIEW, $message);
+    }
+
+    /**
+     * Delete a broadcast.
+     *
+     * @param string $msgId
+     *
+     * @return bool
+     */
+    public function delete($msgId)
+    {
+        $options = [
+            'msg_id' => $msgId,
+        ];
+
+        return $this->post(self::API_DELETE, $options);
+    }
+
+    /**
+     * Get a broadcast status.
+     *
+     * @param string $msgId
+     *
+     * @return array
+     */
+    public function status($msgId)
+    {
+        $options = [
+            'msg_id' => $msgId,
+        ];
+
+        return $this->post(self::API_GET, $options);
+    }
+
+    /**
+     * post request.
+     *
+     * @param string $url
+     * @param array|string $options
+     *
+     * @return array|bool
+     *
+     * @throws HttpException
+     */
+    private function post($url, $options)
+    {
+        return $this->parseJSON('post', [$url, $options]);
+    }
+}
diff --git a/src/Broadcast/LICENSE.txt b/src/Broadcast/LICENSE.txt
new file mode 100755
index 000000000..c5251b826
--- /dev/null
+++ b/src/Broadcast/LICENSE.txt
@@ -0,0 +1,22 @@
+The MIT License (MIT)
+
+Copyright (c) 2015 overtrue <anzhengchao@gmail.com>
+
+Permission is hereby granted, free of charge, to any person obtaining a copy
+of this software and associated documentation files (the "Software"), to deal
+in the Software without restriction, including without limitation the rights
+to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
+copies of the Software, and to permit persons to whom the Software is
+furnished to do so, subject to the following conditions:
+
+The above copyright notice and this permission notice shall be included in all
+copies or substantial portions of the Software.
+
+THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
+IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
+FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL THE
+AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
+LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
+OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE
+SOFTWARE.
+
diff --git a/src/Broadcast/MessageBuilder.php b/src/Broadcast/MessageBuilder.php
new file mode 100755
index 000000000..3f98c34dd
--- /dev/null
+++ b/src/Broadcast/MessageBuilder.php
@@ -0,0 +1,252 @@
+<?php
+
+/*
+ * This file is part of the EasyWeChat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+/**
+ * MessageBuilder.php.
+ *
+ * @author    overtrue <i@overtrue.me>
+ * @copyright 2015 overtrue <i@overtrue.me>
+ *
+ * @link      https://github.com/overtrue
+ * @link      http://overtrue.me
+ */
+
+namespace EasyWeChat\Broadcast;
+
+use EasyWeChat\Core\Exceptions\InvalidArgumentException;
+use EasyWeChat\Core\Exceptions\RuntimeException;
+
+/**
+ * Class MessageBuilder.
+ */
+class MessageBuilder
+{
+    /**
+     * Message target user or group.
+     *
+     * @var mixed
+     */
+    protected $to;
+
+    /**
+     * Message type.
+     *
+     * @var string
+     */
+    protected $msgType;
+
+    /**
+     * Message.
+     *
+     * @var mixed
+     */
+    protected $message;
+
+    /**
+     * Message types.
+     *
+     * @var array
+     */
+    private $msgTypes = [
+        Broadcast::MSG_TYPE_TEXT,
+        Broadcast::MSG_TYPE_NEWS,
+        Broadcast::MSG_TYPE_IMAGE,
+        Broadcast::MSG_TYPE_VIDEO,
+        Broadcast::MSG_TYPE_VOICE,
+        Broadcast::MSG_TYPE_CARD,
+    ];
+
+    /**
+     * Preview bys.
+     *
+     * @var array
+     */
+    private $previewBys = [
+        Broadcast::PREVIEW_BY_OPENID,
+        Broadcast::PREVIEW_BY_WXH,
+    ];
+
+    /**
+     * Set message type.
+     *
+     * @param string $msgType
+     *
+     * @return MessageBuilder
+     *
+     * @throws InvalidArgumentException
+     */
+    public function msgType($msgType)
+    {
+        if (!in_array($msgType, $this->msgTypes)) {
+            throw new InvalidArgumentException('This message type not exist.');
+        }
+
+        $this->msgType = $msgType;
+
+        return $this;
+    }
+
+    /**
+     * Set message.
+     *
+     * @param string|array $message
+     *
+     * @return MessageBuilder
+     */
+    public function message($message)
+    {
+        $this->message = $message;
+
+        return $this;
+    }
+
+    /**
+     * Set target user or group.
+     *
+     * @param mixed $to
+     *
+     * @return MessageBuilder
+     */
+    public function to($to)
+    {
+        $this->to = $to;
+
+        return $this;
+    }
+
+    /**
+     * Build message.
+     *
+     * @return bool
+     *
+     * @throws RuntimeException
+     */
+    public function build()
+    {
+        if (empty($this->msgType)) {
+            throw new RuntimeException('message type not exist.');
+        }
+
+        if (empty($this->message)) {
+            throw new RuntimeException('No message content to send.');
+        }
+
+        // 群发视频消息给用户列表时，视频消息格式需要另外处理，具体见文档
+        if (isset($this->to) && is_array($this->to) && $this->msgType == Broadcast::MSG_TYPE_VIDEO) {
+            $this->msgType = 'video';
+        } elseif ($this->msgType == Broadcast::MSG_TYPE_VIDEO) {
+            $this->msgType = 'mpvideo';
+        }
+
+        $content = (new Transformer($this->msgType, $this->message))->transform();
+
+        $group = isset($this->to) ? $this->to : null;
+
+        $message = array_merge($this->buildGroup($group), $content);
+
+        return $message;
+    }
+
+    /**
+     * Build preview message.
+     *
+     * @param string $by
+     *
+     * @return array
+     *
+     * @throws RuntimeException
+     * @throws InvalidArgumentException
+     */
+    public function buildPreview($by)
+    {
+        if (!in_array($by, $this->previewBys)) {
+            throw new InvalidArgumentException('This preview by not exist.');
+        }
+
+        if (empty($this->msgType)) {
+            throw new RuntimeException('Message type not exist.');
+        }
+
+        if (empty($this->message)) {
+            throw new RuntimeException('No message content to send.');
+        }
+
+        if (empty($this->to)) {
+            throw new RuntimeException('No to.');
+        }
+
+        $content = (new Transformer($this->msgType, $this->message))->transform();
+
+        $message = array_merge($this->buildTo($this->to, $by), $content);
+
+        return $message;
+    }
+
+    /**
+     * Build group.
+     *
+     * @param mixed $group
+     *
+     * @return array
+     */
+    private function buildGroup($group)
+    {
+        if (is_null($group)) {
+            $group = [
+                'filter' => [
+                    'is_to_all' => true,
+                ],
+            ];
+        } elseif (is_array($group)) {
+            $group = [
+                'touser' => $group,
+            ];
+        } else {
+            $group = [
+                'filter' => [
+                    'is_to_all' => false,
+                    'group_id' => $group,
+                ],
+            ];
+        }
+
+        return $group;
+    }
+
+    /**
+     * Build to.
+     *
+     * @param string $to
+     * @param string $by
+     *
+     * @return array
+     */
+    private function buildTo($to, $by)
+    {
+        return [
+            $by => $to,
+        ];
+    }
+
+    /**
+     * Return property.
+     *
+     * @param string $property
+     *
+     * @return mixed
+     */
+    public function __get($property)
+    {
+        if (property_exists($this, $property)) {
+            return $this->$property;
+        }
+    }
+}
diff --git a/src/Broadcast/README.md b/src/Broadcast/README.md
new file mode 100755
index 000000000..a68f40593
--- /dev/null
+++ b/src/Broadcast/README.md
@@ -0,0 +1,2 @@
+# broadcast
+微信 SDK 群发模块
diff --git a/src/Broadcast/Transformer.php b/src/Broadcast/Transformer.php
new file mode 100755
index 000000000..363554288
--- /dev/null
+++ b/src/Broadcast/Transformer.php
@@ -0,0 +1,196 @@
+<?php
+
+/*
+ * This file is part of the EasyWeChat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+/**
+ * Transformer.php.
+ *
+ * @author    overtrue <i@overtrue.me>
+ * @copyright 2015 overtrue <i@overtrue.me>
+ *
+ * @link      https://github.com/overtrue
+ * @link      http://overtrue.me
+ */
+
+namespace EasyWeChat\Broadcast;
+
+use EasyWeChat\Core\Exceptions\InvalidArgumentException;
+
+/**
+ * Class Transformer.
+ */
+class Transformer
+{
+    /**
+     * Message type.
+     *
+     * @var string
+     */
+    protected $msgType;
+
+    /**
+     * message.
+     *
+     * @var mixed
+     */
+    protected $message;
+
+    /**
+     * Transformer constructor.
+     *
+     * @param $msgType
+     * @param $message
+     */
+    public function __construct($msgType, $message)
+    {
+        $this->msgType = $msgType;
+
+        $this->message = $message;
+    }
+
+    /**
+     * Transform message.
+     *
+     * @return array
+     */
+    public function transform()
+    {
+        $handle = sprintf("transform%s", ucfirst($this->msgType));
+
+        return method_exists($this, $handle) ? $this->$handle($this->message) : [];
+    }
+
+    /**
+     * Transform text message.
+     *
+     * @param string $message
+     *
+     * @return array
+     */
+    public function transformText($message)
+    {
+        return [
+            'text' => [
+                'content' => $message,
+            ],
+            'msgtype' => 'text',
+        ];
+    }
+
+    /**
+     * Transform news message.
+     *
+     * @param string $message
+     *
+     * @return array
+     */
+    public function transformNews($message)
+    {
+        return [
+            'mpnews' => [
+                'media_id' => $message,
+            ],
+            'msgtype' => 'mpnews',
+        ];
+    }
+
+    /**
+     * Transform image message.
+     *
+     * @param string $message
+     *
+     * @return array
+     */
+    public function transformImage($message)
+    {
+        return [
+            'image' => [
+                'media_id' => $message,
+            ],
+            'msgtype' => 'image',
+        ];
+    }
+
+    /**
+     * Transform video message.
+     *
+     * @param array $message
+     *
+     * @return array
+     *
+     * @throws InvalidArgumentException
+     */
+    public function transformVideo(array $message)
+    {
+        if (3 != count($message)) {
+            throw new InvalidArgumentException('send message to openids, the message must be three arguments.');
+        }
+
+        return [
+            'video' => [
+                'media_id'  => $message[0],
+                'title' => $message[1],
+                'description' => $message[2],
+            ],
+            'msgtype' => 'video',
+        ];
+    }
+
+    /**
+     * Transform mpvideo message.
+     *
+     * @param string $message
+     *
+     * @return array
+     */
+    public function transformMpvideo($message)
+    {
+        return [
+            'mpvideo' => [
+                'media_id'  => $message,
+            ],
+            'msgtype' => 'mpvideo',
+        ];
+    }
+
+    /**
+     * Transform voice message.
+     *
+     * @param string $message
+     *
+     * @return array
+     */
+    public function transformVoice($message)
+    {
+        return [
+            'voice' => [
+                'media_id' => $message,
+            ],
+            'msgtype' => 'voice',
+        ];
+    }
+
+    /**
+     * Transform card message.
+     *
+     * @param $message
+     *
+     * @return array
+     */
+    public function transformCard($message)
+    {
+        return [
+            'wxcard' => [
+                'card_id' => $message,
+            ],
+            'msgtype' => 'wxcard',
+        ];
+    }
+}
diff --git a/src/Broadcast/composer.json b/src/Broadcast/composer.json
new file mode 100755
index 000000000..422ebc425
--- /dev/null
+++ b/src/Broadcast/composer.json
@@ -0,0 +1,32 @@
+{
+    "name": "easywechat/broadcast",
+    "description": "broadcast module for EasyWeChat SDK.",
+    "keywords": [
+        "wechat",
+        "weixin",
+        "SDK",
+        "broadcast",
+        "easywechat"
+    ],
+    "license": "MIT",
+    "authors": [
+        {
+            "name": "overtrue",
+            "email": "anzhengchao@gmail.com"
+        }
+    ],
+    "autoload": {
+        "psr-4": {
+            "EasyWeChat\\Broadcast\\": "src/"
+        }
+    },
+    "minimum-stability": "dev",
+    "require-dev": {
+        "phpunit/phpunit": "4.8.*",
+        "mockery/mockery": "^1.0@dev"
+    },
+    "require": {
+        "easywechat/core": "dev-master",
+        "easywechat/message": "dev-master"
+    }
+}
diff --git a/src/Foundation/Application.php b/src/Foundation/Application.php
old mode 100644
new mode 100755
index 2347729e2..27f8de2c2
--- a/src/Foundation/Application.php
+++ b/src/Foundation/Application.php
@@ -61,6 +61,7 @@ class Application extends Container
         ServiceProviders\StatsServiceProvider::class,
         ServiceProviders\PaymentServiceProvider::class,
         ServiceProviders\POIServiceProvider::class,
+        ServiceProviders\BroadcastServiceProvider::class,
     ];
 
     /**
@@ -123,6 +124,8 @@ public function getExceptionHandler()
      * Add a provider.
      *
      * @param string $provider
+     *
+     * @return Application
      */
     public function addProvider($provider)
     {
diff --git a/src/Foundation/ServiceProviders/BroadcastServiceProvider.php b/src/Foundation/ServiceProviders/BroadcastServiceProvider.php
new file mode 100755
index 000000000..6c57ad3c8
--- /dev/null
+++ b/src/Foundation/ServiceProviders/BroadcastServiceProvider.php
@@ -0,0 +1,48 @@
+<?php
+
+/*
+ * This file is part of the overtrue/wechat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+/**
+ * BroadcastServiceProvider.php.
+ *
+ * This file is part of the wechat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+namespace EasyWeChat\Foundation\ServiceProviders;
+
+use EasyWeChat\Broadcast\Broadcast;
+use Pimple\Container;
+use Pimple\ServiceProviderInterface;
+
+/**
+ * Class BroadcastServiceProvider.
+ */
+class BroadcastServiceProvider implements ServiceProviderInterface
+{
+    /**
+     * Registers services on the given container.
+     *
+     * This method should only be used to configure services and parameters.
+     * It should not get services.
+     *
+     * @param Container $pimple A container instance
+     */
+    public function register(Container $pimple)
+    {
+        $pimple['broadcast'] = function ($pimple) {
+            return new Broadcast($pimple['access_token']);
+        };
+    }
+}
diff --git a/tests/Broadcast/BroadcastBroadcastTest.php b/tests/Broadcast/BroadcastBroadcastTest.php
new file mode 100755
index 000000000..47d0f9efc
--- /dev/null
+++ b/tests/Broadcast/BroadcastBroadcastTest.php
@@ -0,0 +1,129 @@
+<?php
+
+/*
+* This file is part of the EasyWeChat.
+*
+* (c) overtrue <i@overtrue.me>
+*
+* This source file is subject to the MIT license that is bundled
+* with this source code in the file LICENSE.
+*/
+
+use EasyWeChat\Broadcast\Broadcast;
+
+class BroadcastBroadcastTest extends PHPUnit_Framework_TestCase
+{
+    public function getBroadcast()
+    {
+        $broadcast = Mockery::mock('EasyWeChat\Broadcast\Broadcast[parseJSON]', [Mockery::mock('EasyWeChat\Core\AccessToken')]);
+        $broadcast->shouldReceive('parseJSON')->andReturnUsing(function ($method, $params) {
+            return [
+                'api'    => $params[0],
+                'params' => empty($params[1]) ? null : $params[1],
+                'quires' => empty($params[3]) ? null : $params[3],
+            ];
+        });
+
+        return $broadcast;
+    }
+
+    /**
+     * Test send().
+     */
+    public function testSend()
+    {
+        $broadcast = $this->getBroadcast();
+
+        $response = $broadcast->send(Broadcast::MSG_TYPE_TEXT, 'CONTENT');
+
+        $this->assertStringStartsWith(Broadcast::API_SEND_BY_GROUP, $response['api']);
+        $data = [
+            'filter' => [
+                'is_to_all' => true,
+            ],
+            'text' => [
+                'content' => 'CONTENT',
+            ],
+            'msgtype' => 'text',
+        ];
+        $this->assertEquals($data, $response['params']);
+
+        $broadcast = $this->getBroadcast();
+
+        $response = $broadcast->send(Broadcast::MSG_TYPE_TEXT, 'CONTENT', ['OPENID1', 'OPENID2', 'OPENID3']);
+
+        $this->assertStringStartsWith(Broadcast::API_SEND_BY_OPENID, $response['api']);
+        $data = [
+            'touser' => [
+                'OPENID1',
+                'OPENID2',
+                'OPENID3',
+            ],
+            'text' => [
+                'content' => 'CONTENT',
+            ],
+            'msgtype' => 'text',
+        ];
+        $this->assertEquals($data, $response['params']);
+    }
+
+    /**
+     * Test preview().
+     */
+    public function testPreview()
+    {
+        $broadcast = $this->getBroadcast();
+
+        $response = $broadcast->preview(Broadcast::MSG_TYPE_TEXT, 'CONTENT', 'OPENID');
+
+        $this->assertStringStartsWith(Broadcast::API_PREVIEW, $response['api']);
+        $data = [
+            Broadcast::PREVIEW_BY_OPENID => 'OPENID',
+            'text' => [
+                'content' => 'CONTENT',
+            ],
+            'msgtype' => 'text',
+        ];
+        $this->assertEquals($data, $response['params']);
+
+        $broadcast = $this->getBroadcast();
+
+        $response = $broadcast->preview(Broadcast::MSG_TYPE_TEXT, 'CONTENT', 'WXH', Broadcast::PREVIEW_BY_WXH);
+
+        $this->assertStringStartsWith(Broadcast::API_PREVIEW, $response['api']);
+        $data = [
+            Broadcast::PREVIEW_BY_WXH => 'WXH',
+            'text' => [
+                'content' => 'CONTENT',
+            ],
+            'msgtype' => 'text',
+        ];
+        $this->assertEquals($data, $response['params']);
+    }
+
+    /**
+     * Test delete().
+     */
+    public function testDelete()
+    {
+        $broadcast = $this->getBroadcast();
+
+        $response = $broadcast->delete('MSG_ID');
+
+        $this->assertStringStartsWith(Broadcast::API_DELETE, $response['api']);
+        $this->assertEquals('MSG_ID', $response['params']['msg_id']);
+    }
+
+    /**
+     * Test status().
+     */
+    public function testStatus()
+    {
+        $broadcast = $this->getBroadcast();
+
+        $response = $broadcast->status('MSG_ID');
+
+        $this->assertStringStartsWith(Broadcast::API_GET, $response['api']);
+        $this->assertEquals('MSG_ID', $response['params']['msg_id']);
+    }
+}
diff --git a/tests/Broadcast/BroadcastMessageBuilderTest.php b/tests/Broadcast/BroadcastMessageBuilderTest.php
new file mode 100755
index 000000000..eed2d38e0
--- /dev/null
+++ b/tests/Broadcast/BroadcastMessageBuilderTest.php
@@ -0,0 +1,150 @@
+<?php
+
+/*
+ * This file is part of the EasyWeChat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+use EasyWeChat\Broadcast\MessageBuilder;
+use EasyWeChat\Broadcast\Broadcast;
+
+class BroadcastMessageBuilderTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * Test msgType().
+     *
+     * @expectedException EasyWeChat\Core\Exceptions\InvalidArgumentException
+     */
+    public function testMsgType()
+    {
+        $messageBuilder = new MessageBuilder();
+
+        $response = $messageBuilder->msgType(Broadcast::MSG_TYPE_TEXT);
+
+        $this->assertEquals($messageBuilder, $response);
+        $this->assertEquals(Broadcast::MSG_TYPE_TEXT, $messageBuilder->msgType);
+
+        // exception
+        $messageBuilder->msgType('link');
+    }
+
+    /**
+     * Test message();
+     */
+    public function testMessage()
+    {
+        $messageBuilder = new MessageBuilder();
+
+        $response = $messageBuilder->message('CONTENT');
+
+        $this->assertEquals($messageBuilder, $response);
+        $this->assertEquals('CONTENT', $messageBuilder->message);
+    }
+
+    /**
+     * Test to().
+     */
+    public function testTo()
+    {
+        $messageBuilder = new MessageBuilder();
+
+        $response = $messageBuilder->to('GROUP');
+
+        $this->assertEquals($messageBuilder, $response);
+        $this->assertEquals('GROUP', $messageBuilder->to);
+    }
+
+    /**
+     * Test build().
+     *
+     * @expectedException EasyWeChat\Core\Exceptions\RuntimeException
+     */
+    public function testBuild()
+    {
+        $messageBuilder = new MessageBuilder();
+        $messageBuilder->msgType(Broadcast::MSG_TYPE_TEXT)->message('CONTENT');
+        $message = [
+            'filter' => [
+                'is_to_all' => true,
+            ],
+            'text' => [
+                'content' => 'CONTENT',
+            ],
+            'msgtype' => 'text',
+        ];
+        $this->assertEquals($message, $messageBuilder->build());
+
+        $messageBuilder = new MessageBuilder();
+        $messageBuilder->msgType(Broadcast::MSG_TYPE_VIDEO)->message('MEDIA_ID');
+        $message = [
+            'filter' => [
+                'is_to_all' => true,
+            ],
+            'mpvideo' => [
+                'media_id' => 'MEDIA_ID',
+            ],
+            'msgtype' => 'mpvideo',
+        ];
+        $this->assertEquals($message, $messageBuilder->build());
+
+        $messageBuilder = new MessageBuilder();
+        $messageBuilder->msgType(Broadcast::MSG_TYPE_VIDEO)->message(['MEDIA_ID', 'TITLE', 'DESCRIPTION'])->to(['OPENID1', 'OPENID2', 'OPENID3']);
+        $message = [
+            'touser' => [
+                'OPENID1',
+                'OPENID2',
+                'OPENID3',
+            ],
+            'video' => [
+                'media_id' => 'MEDIA_ID',
+                'title' => 'TITLE',
+                'description' => 'DESCRIPTION',
+            ],
+            'msgtype' => 'video',
+        ];
+        $this->assertEquals($message, $messageBuilder->build());
+
+        // exception
+        $messageBuilder = new MessageBuilder();
+        $messageBuilder->build();
+    }
+
+    /**
+     * Test buildPreview().
+     *
+     * @expectedException EasyWeChat\Core\Exceptions\RuntimeException
+     * @expectedException EasyWeChat\Core\Exceptions\InvalidArgumentException
+     */
+    public function testBuildPreview()
+    {
+        $messageBuilder = new MessageBuilder();
+        $messageBuilder->msgType(Broadcast::MSG_TYPE_TEXT)->message('CONTENT')->to('OPENID');
+        $message = [
+            Broadcast::PREVIEW_BY_OPENID => 'OPENID',
+            'text' => [
+                'content' => 'CONTENT',
+            ],
+            'msgtype' => 'text',
+        ];
+        $this->assertEquals($message, $messageBuilder->buildPreview(Broadcast::PREVIEW_BY_OPENID));
+
+        $messageBuilder = new MessageBuilder();
+        $messageBuilder->msgType(Broadcast::MSG_TYPE_TEXT)->message('CONTENT')->to('WXH');
+        $message = [
+            Broadcast::PREVIEW_BY_WXH => 'WXH',
+            'text' => [
+                'content' => 'CONTENT',
+            ],
+            'msgtype' => 'text',
+        ];
+        $this->assertEquals($message, $messageBuilder->buildPreview(Broadcast::PREVIEW_BY_WXH));
+
+        // exception
+        $messageBuilder = new MessageBuilder();
+        $messageBuilder->build();
+    }
+}
diff --git a/tests/Broadcast/BroadcastTransformerTest.php b/tests/Broadcast/BroadcastTransformerTest.php
new file mode 100755
index 000000000..a1b7d383b
--- /dev/null
+++ b/tests/Broadcast/BroadcastTransformerTest.php
@@ -0,0 +1,151 @@
+<?php
+
+/*
+ * This file is part of the EasyWeChat.
+ *
+ * (c) overtrue <i@overtrue.me>
+ *
+ * This source file is subject to the MIT license that is bundled
+ * with this source code in the file LICENSE.
+ */
+
+use EasyWeChat\Broadcast\Transformer;
+
+class BroadcastTransformerTest extends PHPUnit_Framework_TestCase
+{
+    /**
+     * Test transform().
+     */
+    public function testTransform()
+    {
+        $transformer = new Transformer('link', 'http://easywechat.org');
+
+        $this->assertEquals([], $transformer->transform());
+    }
+
+    /**
+     * Test transformText().
+     */
+    public function testTransformText()
+    {
+        $transformer = new Transformer('text', 'CONTENT');
+
+        $msg = [
+            'text' => [
+                'content' => 'CONTENT',
+            ],
+            'msgtype' => 'text',
+        ];
+
+        $this->assertEquals($msg, $transformer->transform());
+    }
+
+    /**
+     * Test transformNews().
+     */
+    public function testTransformNews()
+    {
+        $transformer = new Transformer('news', 'MEDIA_ID');
+
+        $msg = [
+            'mpnews' => [
+                'media_id' => 'MEDIA_ID',
+            ],
+            'msgtype' => 'mpnews',
+        ];
+
+        $this->assertEquals($msg, $transformer->transform());
+    }
+
+    /**
+     * Test transformImage().
+     */
+    public function testTransformImage()
+    {
+        $transformer = new Transformer('image', 'MEDIA_ID');
+
+        $msg = [
+            'image' => [
+                'media_id' => 'MEDIA_ID',
+            ],
+            'msgtype' => 'image',
+        ];
+
+        $this->assertEquals($msg, $transformer->transform());
+    }
+
+    /**
+     * Test transformVideo().
+     *
+     * @expectedException EasyWeChat\Core\Exceptions\InvalidArgumentException
+     */
+    public function testTransformVideo()
+    {
+        $transformer = new Transformer('video', ['MEDIA_ID', 'TITLE', 'DESCRIPTION']);
+
+        $msg = [
+            'video' => [
+                'media_id'  => 'MEDIA_ID',
+                'title' => 'TITLE',
+                'description' => 'DESCRIPTION',
+            ],
+            'msgtype' => 'video',
+        ];
+
+        $this->assertEquals($msg, $transformer->transform());
+
+        // exception
+        (new Transformer('video', ['MEDIA_ID', 'TITLE']))->transform();
+    }
+
+    /**
+     * Test transformMpvideo().
+     */
+    public function testTransformMpvideo()
+    {
+        $transformer = new Transformer('mpvideo', 'MEDIA_ID');
+
+        $msg = [
+            'mpvideo' => [
+                'media_id'  => 'MEDIA_ID',
+            ],
+            'msgtype' => 'mpvideo',
+        ];
+
+        $this->assertEquals($msg, $transformer->transform());
+    }
+
+    /**
+     * Test transformVoice().
+     */
+    public function testTransformVoice()
+    {
+        $transformer = new Transformer('voice', 'MEDIA_ID');
+
+        $msg = [
+            'voice' => [
+                'media_id' => 'MEDIA_ID',
+            ],
+            'msgtype' => 'voice',
+        ];
+
+        $this->assertEquals($msg, $transformer->transform());
+    }
+
+    /**
+     * Test transformCard().
+     */
+    public function testTransformCard()
+    {
+        $transformer = new Transformer('card', 'CARD_ID');
+
+        $msg = [
+            'wxcard' => [
+                'card_id' => 'CARD_ID',
+            ],
+            'msgtype' => 'wxcard',
+        ];
+
+        $this->assertEquals($msg, $transformer->transform());
+    }
+}