Vehicle brake disc rust removal method and device, vehicle controller and vehicle

The invention is suitable for the technical field of vehicles, and provides a rust removal method and device for a vehicle brake disc, a vehicle controller and a vehicle. The method comprises the steps that under the condition that the vehicle enters a driving cycle, vehicle information is obtained; under the condition that the vehicle information meets a first preset condition, the current vehicle state is determined, and the first preset condition is used for indicating that the vehicle does not have the target event; under the condition that the current vehicle state meets a second preset condition, a brake disc rust removal function is started to adjust the motor braking proportion of the vehicle, so that the enabling frequency of mechanical braking is increased; wherein the motor braking proportion is the proportion of the motor braking torque in the total braking torque of the vehicle, and the second preset condition is used for indicating that the vehicle is in a safe driving state. According to the sc