The embodiment of the invention provides a gear switching method and device for a vehicle ignition switch. The gear switching method comprises the steps that the number of times of received trigger signals is counted, the number of times counting value is generated, and the state information of a vehicle is obtained; and a target gear of the ignition switch is determined according to the number of times counting value and the state information of the vehicle so that a current gear of the ignition switch can be switched to the target gear. According to the embodiment of the gear switching method and device for the vehicle ignition switch, traditional vehicle key ignition switch gear switching is replaced, vehicle remote leasing is achieved, and the defect that gear switching of the ignition switch cannot be conducted due to the fact that a vehicle key is lost is overcome.