Vehicle anti-collision method, device and system

The invention discloses a vehicle anti-collision method, device and system. With the vehicle anti-collision method, device and system adopted, the accuracy of vehicle anti-collision warning can be improved, and the driving of vehicles is safer. The method includes the following steps that: the attribute information and motion state information of the vehicles are acquired; the safety time of the vehicles is determined according to the attribute information and motion state information of the vehicles, wherein the safety time of the vehicles is a time interval from a current time point to a time point when a risk of collision between the vehicles and vehicles before the vehicles; a vehicle set where collision risks exist is determined according to the determined safety time of the vehicles; and the collision risk degree of each vehicle in the vehicle set is determined according to the safety time of each vehicle in the vehicle set; and early warning and prompting are performed for the vehicles in the vehicle set where collision risks exist according to the collision risk degree of each vehicle in the vehicle set.