Abstract: When the tracked vehicle with mechanical gearbox and hydrostatic transmission device is parked, the parking brake handle needs to be manually operated to make the vehicle park.This parking mode has certain disadvantages for the intelligent pepper direct seeding machine.This paper focuses on the design and structure of an automatic parking device to solve the technical problem that when the intelligent pepper direct seeding machine stops, it needs to manually operate the brake device to achieve braking.The design of the automatic paeking device can achieve can achieve the effect of “automatically releasing the brake when the vehicle starts, and automatically parking when the engine stops”.