Vehicle driving deviation refers to the straight driving of the vehicle, if the steering wheel is loosened slightly, the car automatically deviates to one side (that is, it is not easy to keep a straight line). To ensure the linear stability and safety of the car, it has become an important problem to ensure the safety of people's life and property. Therefore, it is necessary to strengthen the regular inspection of the car in order to repair it in time so that the car is often in good technical condition so as to improve the safety performance of the car.