With absolute advantages of being advertising carrier broadcast, mobile rental LED display has an unparalleled scatter around cities. Traditional festival, commercial promotion activity, government, social organization, institution, school as well as a variety of promotional activities need to post a large number of posters, banner and slogans, which has consumed a large amount of paper. They exert a bad influence on city's environment and image after wind and rain. LED display is widely used in occasions such as lecture tour, big party, touring performance and mobile advertising propagation. It can enhance on-site atmosphere by high definition pictures, speakers, lighting effects and flexible business broadcasts.