Automatic cleaning method and system for vehicle brake disc

The invention belongs to the technical field of automobile control, and discloses an automatic cleaning method and system for a vehicle brake disc, and the method comprises the steps: determining whether to clean the brake disc or not according to the received driving mode of a current vehicle, vehicle power information, vehicle state information, rainfall information and vehicle body fording depth information; and if it is determined that the brake disc is cleaned, the hydraulic control unit is controlled to conduct multiple times of periodic braking on the brake disc at the set pressure. The brake disc cleaning function is only triggered when specific conditions are met, the previous false triggering probability is reduced, and the situation that due to the fact that the number of times of cleaning false triggering is too large, unnecessary function indicator light complaint is caused or the thickness difference of a brake disc DTC is increased too much, and then brake shaking after long mileage is caused i