The present invention provides a wireless video signal transmitter, a receiver, a transmission system and a display system, which relates to the technical field of WiGig wireless transmission. According to an embodiment of the present invention, the wireless video signal transmitter comprises a frequency multiplication unit and a wireless transmitting unit. The frequency multiplication unit is operable to implement the frequency multiplication of a video signal, so as to obtain a first signal and transmit the first signal to the wireless transmitting unit. The wireless transmitting unit is operable to process the first signal to obtain a second signal suitable for wireless transmission, and to transmit the signal wirelessly. The display system of the present invention may receive and process the ultra high-definition video signal processed and transmitted by the wireless video signal transmission system.