Ads as a method proving the information and relative service, it need more and more other ways to show themselves up. We need to find new methods of advertising. Nowadays, the advantages of the vehicle led display, such as the taxi led display, bus led display and truck led display become increasingly outstanding. The taxis and buses have become the business card of the cities. The wide covering range, long operating time, frequency appearing times make the vehicle led display become a effective method of ads.