LED poster screen as a new form of advertising, it has a series of advantages such as energy saving, long life and environmental protection. P3 digital poster display is mostly used as commercial advertising, emphasizing the pursuit of economic benefits, at the same time satisfies the city each kind of audience service information request,such as shopping mall,retail,events and many other areas. Indoor LED Poster through enhance the aesthetics and creativity of led display to attract more attention,which bring more business value.