The invention, which belongs to the field of smart home, provides a smart home system, a smart home device control method and a network device. The system includes a network device and at least one smart home device; the network device is equipped with a wireless communication module and a plurality of universal serial bus (USB) communication interfaces; the at least one smart home device is equipped with a USB communication interface; the network device accesses the network through the wireless communication module; the plurality of USB communication interfaces of the network device are connected with the USB communication interface of the at least one smart home device through a data wire, and when the network device provides power for the at least one smart home device by the data wire, the network device performs data interaction with the at least one smart home device, thereby enabling the at least one smart home device to access the network.