The automobile braking system is one of the most important safety parts of agricultural vehicle. Once the fault occurs, the consequences will be unthinkable. The common typical malfunctions of the agricultural motor vehicle braking system and its maintenance methods are as follows: when the vehicle is driving for braking or other reasons, the wheel of one axis or two axes sometimes moves laterally, that is, the tail flick slip phenomenon, which people often say, is called the brake sideslip.