diff --git a/docs/en/_sidebar.md b/docs/en/_sidebar.md
index eb29008..e4ecc1e 100644
--- a/docs/en/_sidebar.md
+++ b/docs/en/_sidebar.md
@@ -3,3 +3,6 @@
 
 * MQTT Protocol Analysis
     * [Protocol API](en/protocol)
+
+* Upgrade Guide
+  * [1.2 Upgrade Guide](en/upgrade/1.2.md)
\ No newline at end of file
diff --git a/docs/en/client.md b/docs/en/client.md
index b760464..2a6cd1f 100644
--- a/docs/en/client.md
+++ b/docs/en/client.md
@@ -5,38 +5,41 @@
 Create a MQTT client instance
 
 ```php
-Simps\MQTT\Client::__construct(array $config, array $swConfig = [], int $type = SWOOLE_SOCK_TCP, int $clientType = Client::COROUTINE_CLIENT_TYPE)
+Simps\MQTT\Client::__construct(string $host, int $port, ?ClientConfig $config = null, int $clientType = Client::COROUTINE_CLIENT_TYPE)
 ```
 
-* `array $config`
+* `string $host`
 
-An array of client options, you can set the following options:
+Broker's host
+
+* `int $port`
+
+Broker's port
+
+* `ClientConfig $config`
+
+ClientConfig object.
+
+Example.
 
 ```php
 $config = [
-    'host' => '127.0.0.1',
-    'port' => 1883,
-    'user_name' => '',
-    'password' => '',
-    'client_id' => '',
-    'keep_alive' => 10,
-    'protocol_name' => 'MQTT', // or MQIsdp
-    'protocol_level' => 4, // or 3, 5
+    'userName' => '', // 用户名
+    'password' => '', // 密码
+    'clientId' => '', // 客户端id
+    'keepAlive' => 10, // 默认0秒，设置成0代表禁用
+    'protocolName' => 'MQTT', // or MQIsdp
+    'protocolLevel' => 4, // or 3, 5
     'properties' => [], // optional in MQTT5
-    'reconnect_delay' => 3,
+    'reconnectDelay' => 3,
+    'swooleConfig' => []
 ];
+$configObj = new Simps\MQTT\Config\ClientConfig($config);
+$client = new Simps\MQTT\Client('127.0.0.1', 1883, $configObj);
 ```
 
 !> The Client will use the corresponding protocol resolution according to the `protocol_level` set.
 
-* `array $swConfig`
-
-To set the configuration of `Swoole\Coroutine\Client`, please see Swoole document: [set()](https://www.swoole.co.uk/docs/modules/swoole-coroutine-client-set)
-
-* `int $type`
-
-Set `sockType`, such as: `SWOOLE_TCP`, `SWOOLE_TCP | SWOOLE_SSL`
-
 * `int $clientType`
 
 Set the client type, use a Coroutine Client or a Sync Client, the default is Coroutine Client.
diff --git a/docs/en/protocol.md b/docs/en/protocol.md
index 28f3399..a6a56ab 100644
--- a/docs/en/protocol.md
+++ b/docs/en/protocol.md
@@ -5,17 +5,17 @@ Use `pack` and `unpack` to package and parse according to the MQTT protocol.
 ## MQTT 3.1.x
 
 ```php
-Simps\MQTT\Protocol::pack(array $array)
+Simps\MQTT\Protocol\V3::pack(array $array)
 
-Simps\MQTT\Protocol::unpack(string $data)
+Simps\MQTT\Protocol\V3::unpack(string $data)
 ```
 
 ## MQTT 5.0
 
 ```php
-Simps\MQTT\ProtocolV5::pack(array $array)
+Simps\MQTT\Protocol\V5::pack(array $array)
 
-Simps\MQTT\ProtocolV5::unpack(string $data)
+Simps\MQTT\Protocol\V5::unpack(string $data)
 ```
 
 ## Constants
@@ -23,12 +23,12 @@ Simps\MQTT\ProtocolV5::unpack(string $data)
 Constants for MQTT protocol levels and names
 
 ```php
-Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1; // 3.1
-Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1_1; // 3.1.1
-Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_LEVEL_5_0; // 5.0
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1; // 3.1
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1_1; // 3.1.1
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_LEVEL_5_0; // 5.0
 
-Simps\MQTT\ProtocolInterface::MQISDP_PROTOCOL_NAME; // MQIsdp
-Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_NAME; // MQTT
+Simps\MQTT\Protocol\ProtocolInterface::MQISDP_PROTOCOL_NAME; // MQIsdp
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_NAME; // MQTT
 ```
 
 ## ReasonCode
diff --git a/docs/en/upgrade/1.2.md b/docs/en/upgrade/1.2.md
new file mode 100644
index 0000000..77bcba0
--- /dev/null
+++ b/docs/en/upgrade/1.2.md
@@ -0,0 +1,93 @@
+# 1.2 Upgrade Guide
+
+Version 1.2 mainly changes the `__construct` parameters of the Client and the namespace of the Protocol.
+
+## Protocol
+
+A new layer of `Protocol` has been added, using `V3` and `V5` to differentiate between MQTT protocol levels.
+
+Also moved `Simps\MQTT\Types` to `Protocol` as well, changing it to `Simps\MQTT\Protocol\Types`.
+
+### 1.1
+
+```php
+Simps\MQTT\Protocol::pack(array $array)
+Simps\MQTT\ProtocolV5::pack(array $array)
+Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1;
+
+Simps\MQTT\Types::CONNECT;
+```
+
+### 1.2
+
+```php
+Simps\MQTT\Protocol\V3::pack(array $array)
+Simps\MQTT\Protocol\V5::pack(array $array)
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1;
+
+Simps\MQTT\Protocol\Types::CONNECT;
+```
+
+## Client
+
+Client was previously passing array parameters directly, now it is an object.
+
+### 1.1
+
+```php
+use Simps\MQTT\Client;
+
+$config = [
+    'host' => '127.0.0.1',
+    'port' => 1883,
+    'user_name' => '',
+    'password' => '',
+    'client_id' => Client::genClientID(),
+    'keep_alive' => 10,
+];
+$swooleConfig = [
+    'open_mqtt_protocol' => true,
+    'package_max_length' => 2 * 1024 * 1024,
+    'connect_timeout' => 1.0,
+    'write_timeout' => 3.0,
+    'read_timeout' => 0.5,
+];
+$client = new Client($config, $swooleConfig);
+```
+
+### 1.2
+
+```php
+use Simps\MQTT\Client;
+use Simps\MQTT\Config\ClientConfig;
+
+$config = new ClientConfig();
+$config->setUserName('')
+    ->setPassword('')
+    ->setClientId(Client::genClientID())
+    ->setKeepAlive(10);
+
+$swooleConfig = [
+    'open_mqtt_protocol' => true,
+    'package_max_length' => 2 * 1024 * 1024,
+    'connect_timeout' => 1.0,
+    'write_timeout' => 3.0,
+    'read_timeout' => 0.5,
+];
+$config->setSwooleConfig($swooleConfig);
+$client = new Client('127.0.0.1', 1883, $config);
+
+// You can also set it up like this
+$config = new ClientConfig([
+    'userName' => '',
+    'password' => '',
+    'clientId' => '',
+    'keepAlive' => 10,
+    'protocolName' => 'MQTT',
+    'protocolLevel' => 4,
+    'properties' => [],
+    'reconnectDelay' => 3,
+    'swooleConfig' => []
+]);
+$client = new Client('127.0.0.1', 1883, $config);
+```
diff --git a/docs/zh-cn/_sidebar.md b/docs/zh-cn/_sidebar.md
index e4502da..aca75e8 100644
--- a/docs/zh-cn/_sidebar.md
+++ b/docs/zh-cn/_sidebar.md
@@ -3,3 +3,6 @@
 
 * MQTT 协议解析
     * [Protocol API](zh-cn/protocol)
+
+* 版本升级指南
+  * [1.2 升级指南](zh-cn/upgrade/1.2.md)
\ No newline at end of file
diff --git a/docs/zh-cn/client.md b/docs/zh-cn/client.md
index 58c3965..3f27114 100644
--- a/docs/zh-cn/client.md
+++ b/docs/zh-cn/client.md
@@ -5,38 +5,41 @@
 创建一个MQTT客户端实例
 
 ```php
-Simps\MQTT\Client::__construct(array $config, array $swConfig = [], int $type = SWOOLE_SOCK_TCP, int $clientType = Client::COROUTINE_CLIENT_TYPE)
+Simps\MQTT\Client::__construct(string $host, int $port, ?ClientConfig $config = null, int $clientType = Client::COROUTINE_CLIENT_TYPE)
 ```
 
-* 参数`array $config`
+* 参数`string $host`
 
-客户端选项数组，可以设置以下选项：
+Broker 的 IP 地址
+
+* 参数`int $port`
+
+Broker 的端口
+
+* 参数`ClientConfig $config`
+
+客户端配置对象。
+
+示例：
 
 ```php
 $config = [
-    'host' => '127.0.0.1', // MQTT服务端IP
-    'port' => 1883, // MQTT服务端端口
-    'user_name' => '', // 用户名
+    'userName' => '', // 用户名
     'password' => '', // 密码
-    'client_id' => '', // 客户端id
-    'keep_alive' => 10, // 默认0秒，设置成0代表禁用
-    'protocol_name' => 'MQTT', // 协议名，默认为MQTT(3.1.1版本)，也可为MQIsdp(3.1版本)
-    'protocol_level' => 4, // 协议等级，MQTT3.1.1版本为4，5.0版本为5，MQIsdp为3
+    'clientId' => '', // 客户端id
+    'keepAlive' => 10, // 默认0秒，设置成0代表禁用
+    'protocolName' => 'MQTT', // 协议名，默认为MQTT(3.1.1版本)，也可为MQIsdp(3.1版本)
+    'protocolLevel' => 4, // 协议等级，MQTT3.1.1版本为4，5.0版本为5，MQIsdp为3
     'properties' => [], // MQTT5 中所需要的属性
-    'reconnect_delay' => 3, // 重连时的延迟时间
+    'reconnectDelay' => 3, // 重连时的延迟时间
+    'swooleConfig' => []
 ];
+$configObj = new Simps\MQTT\Config\ClientConfig($config);
+$client = new Simps\MQTT\Client('127.0.0.1', 1883, $configObj);
 ```
 
 !> Client 会根据设置的`protocol_level`来使用对应的协议解析
 
-* 参数`array $swConfig`
-
-设置`Swoole\Coroutine\Client | Swoole\Client`的配置，请参考Swoole文档：[set()](https://wiki.swoole.com/#/coroutine_client/client?id=set)
-
-* 参数`int $type`
-
-设置`sockType`，如：`SWOOLE_TCP`、`SWOOLE_TCP | SWOOLE_SSL`
-
 * 参数`int $clientType`
 
 设置客户端类型，使用协程 Client 还是同步阻塞 Client。默认为协程 Client。
diff --git a/docs/zh-cn/protocol.md b/docs/zh-cn/protocol.md
index 4f93b7a..1936b08 100644
--- a/docs/zh-cn/protocol.md
+++ b/docs/zh-cn/protocol.md
@@ -5,17 +5,17 @@
 ## MQTT 3.1.x
 
 ```php
-Simps\MQTT\Protocol::pack(array $array)
+Simps\MQTT\Protocol\V3::pack(array $array)
 
-Simps\MQTT\Protocol::unpack(string $data)
+Simps\MQTT\Protocol\V3::unpack(string $data)
 ```
 
 ## MQTT 5.0
 
 ```php
-Simps\MQTT\ProtocolV5::pack(array $array)
+Simps\MQTT\Protocol\V5::pack(array $array)
 
-Simps\MQTT\ProtocolV5::unpack(string $data)
+Simps\MQTT\Protocol\V5::unpack(string $data)
 ```
 
 ## Constants
@@ -23,12 +23,12 @@ Simps\MQTT\ProtocolV5::unpack(string $data)
 MQTT 协议等级和名称的常量
 
 ```php
-Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1; // 3.1
-Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1_1; // 3.1.1
-Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_LEVEL_5_0; // 5.0
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1; // 3.1
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1_1; // 3.1.1
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_LEVEL_5_0; // 5.0
 
-Simps\MQTT\ProtocolInterface::MQISDP_PROTOCOL_NAME; // MQIsdp
-Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_NAME; // MQTT
+Simps\MQTT\Protocol\ProtocolInterface::MQISDP_PROTOCOL_NAME; // MQIsdp
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_NAME; // MQTT
 ```
 
 ## ReasonCode
diff --git a/docs/zh-cn/upgrade/1.2.md b/docs/zh-cn/upgrade/1.2.md
new file mode 100644
index 0000000..e8bc887
--- /dev/null
+++ b/docs/zh-cn/upgrade/1.2.md
@@ -0,0 +1,93 @@
+# 1.2 升级指南
+
+1.2 版本主要修改了 Client 的构造函数参数和 Protocol 的命名空间。
+
+## Protocol
+
+新增一层`Protocol`，使用`V3`和`V5`来区分 MQTT 协议等级。
+
+同时将`Simps\MQTT\Types`也移动到了`Protocol`下，修改为`Simps\MQTT\Protocol\Types`。
+
+### 1.1
+
+```php
+Simps\MQTT\Protocol::pack(array $array)
+Simps\MQTT\ProtocolV5::pack(array $array)
+Simps\MQTT\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1;
+
+Simps\MQTT\Types::CONNECT;
+```
+
+### 1.2
+
+```php
+Simps\MQTT\Protocol\V3::pack(array $array)
+Simps\MQTT\Protocol\V5::pack(array $array)
+Simps\MQTT\Protocol\ProtocolInterface::MQTT_PROTOCOL_LEVEL_3_1;
+
+Simps\MQTT\Protocol\Types::CONNECT;
+```
+
+## Client
+
+Client 之前是直接传递数组参数的，现在改为对象的方式。
+
+### 1.1
+
+```php
+use Simps\MQTT\Client;
+
+$config = [
+    'host' => '127.0.0.1',
+    'port' => 1883,
+    'user_name' => '',
+    'password' => '',
+    'client_id' => Client::genClientID(),
+    'keep_alive' => 10,
+];
+$swooleConfig = [
+    'open_mqtt_protocol' => true,
+    'package_max_length' => 2 * 1024 * 1024,
+    'connect_timeout' => 1.0,
+    'write_timeout' => 3.0,
+    'read_timeout' => 0.5,
+];
+$client = new Client($config, $swooleConfig);
+```
+
+### 1.2
+
+```php
+use Simps\MQTT\Client;
+use Simps\MQTT\Config\ClientConfig;
+
+$config = new ClientConfig();
+$config->setUserName('')
+    ->setPassword('')
+    ->setClientId(Client::genClientID())
+    ->setKeepAlive(10);
+
+$swooleConfig = [
+    'open_mqtt_protocol' => true,
+    'package_max_length' => 2 * 1024 * 1024,
+    'connect_timeout' => 1.0,
+    'write_timeout' => 3.0,
+    'read_timeout' => 0.5,
+];
+$config->setSwooleConfig($swooleConfig);
+$client = new Client('127.0.0.1', 1883, $config);
+
+// 也可以这样设置
+$config = new ClientConfig([
+    'userName' => '',
+    'password' => '',
+    'clientId' => '',
+    'keepAlive' => 10,
+    'protocolName' => 'MQTT',
+    'protocolLevel' => 4,
+    'properties' => [],
+    'reconnectDelay' => 3,
+    'swooleConfig' => []
+]);
+$client = new Client('127.0.0.1', 1883, $config);
+```