As the auto industry enters the Internet age，the vehicle is no longer a simple substitute tool，nor is it just a product that only auto company can produce. More and more Internet companies are starting to join the ranks of auto makers，such as Google，Uber，Baidu，Nio，and so on. But after the sudden Tesla accident，people returned to calm，and the safety of self-driving vehicles was taken seriously again. People began to suspect that there might be a congenital defect in the sensor-led car maker，the camera，radar and other virtual sensing equipment could not make accurate image analysis of the complicated environment of all-weather and all-road conditions，which led to the occurrence of safety accidents. And the coincident information communication technology of V2X can avoid the problem of image recognition inaccuracy and so on，and build a bridge to communicate with the outside world，so as to realize the timely perception and effective transmission of information. Therefor the vehicle and the outside world can communicate with each other and the probability of accidents.