Abstract: With the development of artificial intelligence (AI) technology, intelligent systems, such as intelligent driving cars and intelligent robots, gradually replace or assist human beings to do simple or complex work in various scenes. Starting from the intelligent algorithm in intelligent vehicle, this paper summarizes the research progress of artificial intelligence perception algorithm and decision algorithm in intelligent vehicle. Secondly, the uncertainty of intelligent algorithm is discussed. Finally, from the point of view of the security problems brought by the uncertainty of the intelligent algorithm, this paper discusses the significance and development of the expected functional security, and discusses the necessity of human-computer co driving to solve the expected functional security of the current intelligent driving vehicle.