Vehicle group driving method and system, and vehicle

The invention relates to a vehicle group driving method and system, and a vehicle. The method is applied to a master vehicle and comprises the steps of broadcasting grouping information; sending a response message for representing a permission to group joining to a slave vehicle if the number of current vehicles does not group capacity and when a group joining request sent from the slave vehicle is received; updating vehicle number when a vehicle following success message is received; returning to the step of broadcasting grouping information until the vehicle number reaches the group capacity. Therefore, a plurality of vehicles form a group and drive in a queue form, and the road passing efficiency can be improved. Moreover, a driving mode of the master vehicle during leading can be an automatic driving mode, in this way, automatic driving of the group can be achieved, the speed of each vehicle in the group can be controlled very well, the vehicle distance can be controlled very welland is minimized to a con