The present disclosure provides a method, system, device, and terminal for network initialization of a multimedia playback device. The method includes: screening, by a terminal, a wireless access point of the multimedia playback device; connecting the terminal to a first wireless network of the wireless access point of the multimedia playback device; and sending, by the terminal, parameter information of a second wireless network, to which the terminal connects, to the multimedia playback device through the first wireless network, which allows the multimedia playback device to be connected to the second wireless network according to the parameter information of the second wireless network, so as to complete initialization. The method for network initialization of a multimedia playback device does not need to download a specific application to perform multistep network initialization nor to input a series of IP addresses through a network browser and make complicated settings to perform network initialization. Implementation of the process of the network initialization herein is simple, convenient to use, and highly efficient.