The aerodynamic effects not only directly affect the acceleration characteristic and the fuel economy of the race car, but also have a great influence on the handling of the race car. In this paper, the aerodynamic model of the vehicle is established, and the aerodynamic parameters of the vehicle are analyzed by using the Computational Fluid Dynamics. The aerodynamic parameters of the different driving conditions are obtained. The vehicle multibody dynamics model with double-wishbone suspension and rack and pinion steering system is established. The influence of aerodynamic effects on the stability of vehicle control is analyzed through steady static circular test and other conditions analysis to evaluate the understeer characteristics, yaw rate response time, maximum lateral acceleration and other performance to evaluate the specific gain of the aerodynamic effects on racing control stability. Establishing the track model, analyzing the driving trajectory, according to weights allocation of the track minimum travel curvature and track the minimum travel route to optimize the optimal route for racing considering aerodynamic effects. According to the racing speed characteristics and distribution of longitudinal acceleration and lateral acceleration, to evaluate the racing performance limit, and to monitor the car model real-time status, to guide the racing driver to drive, reducing the lap travel time.