Disclosed are a server device to which a universal serial bus (USB) device is connected, and a device sharing method thereof, the server device capable of sharing the USB device with a client device through a network, the server device including: a USB controller which sets up connection information containing a device address of a connected USB device; and a USB management unit which connects the client device to the USB device by storing the connection information, allocating a virtual connection address for connecting the client device to the USB device, and mapping the virtual connection address with the device address if the client device requests for sharing the USB device. With this, there are provided a server device and a device sharing method, in which the plurality of client devices can have connection and access to the USB device.