connect to multiple database type

Yes you can: https://laravel.com/docs/5.5/database#using-multiple-database-connections

in .env file how can I make this connection ?

is this right?!

//mySQl

DB_CONNECTION=mysql
DB_HOST=127.0.0.1
DB_PORT=3306
DB_DATABASE=homestead
DB_USERNAME=homestead
DB_PASSWORD=secret
//sqlsrv
DB_CONNECTION_SECOND=sqlsrv
DB_HOST_SECOND=127.0.0.1
DB_PORT_SECOND=1433
DB_DATABASE_SECOND=homestead2
DB_USERNAME_SECOND=homestead
DB_PASSWORD_SECOND=secret

If you want to set your parameters that way you still have to change your config/database.php-file .

you should config in database.php!

1. Go to config/database.php
2. Add your database connection

'connections' => [
    'sqlsrv' => [
        'driver' => 'sqlsrv',
            'host' => env('DB_HOST_SECOND', 'localhost'),
            'port' => env('DB_PORT_SECOND', '1433'),
            'database' => env('DB_DATABASE_SECOND', 'forge'),
            'username' => env('DB_USERNAME_SECOND', 'forge'),
            'password' => env('DB_PASSWORD_SECOND', ''),
            'charset' => 'utf8',
            'prefix' => '',
    ],
]

1. Setup your env file
2. Use as per documentation.