MUDS is digital television broadcast of transmission system which can transmit a number of UHF television channel adjacent channel fat and several sets of broadcasting programs at the same time. The system has advantage with less investment and high efficiency. It can quickly achieve the promotion of digital TV in small and medium-sized cities and rural areas, and do not apply outside of the frequency of Radio, Film and Television. It is better than MMDS transmission in he effects of rain and tree with the long shadow. The coverage radius is far and directly transmit and receive without the up and down conversion at client port. A phase noise can be reducted . It can reduce transmission and receive costs and enhance the quality of transmission.