A digital wireless transmitter is disclosed. The digital wireless transmitter includes an interface, used to receive an audio signal and/or a video signal, the digital wireless transmitter is pluggable into an electronic device via the interface; a digital modulator, coupled to the interface, the digital modulator is used to modulate the audio signal and/or the video signal into a digital television signal; and a RF front end circuit, coupled to the digital modulator, the RF front end circuit is used to transform the digital television signal to a RF signal on a predetermined band.