In the course of vehicle driving, the driver can judge the distance of the rear car according to the image of the car central rearview mirror. with the development of society and the improvement of the level of science and technology, people on the safety of driving cars, entertainment put forward higher requirements. The car's central rearview mirror emerged as an integrated Android (Android), wince, and other operating system, with a wide range of features in the automotive intelligent rearview mirror. As the smartphone gradually replaces a single function of the instamatics or mobile phone, set a variety of functions in one, to the intelligent direction of the development of intelligent rearview mirror will also become a common car rearview mirror development of the inevitable trend of evolution. Because of its space-saving, powerful, convenient for many car friends, has become a popular car category at home and abroad to add items.