In recent years, magnesium alloy wheels have been gradually used in passenger cars, which have good mechanical properties and light weight. Compared with the ordinary hub, the heat dissipation performance of the magnesium alloy hub is better. By optimizing the structure of the hub, the heat generated by the braking system can be quickly discharged to the air. At the same time, the magnesium alloy hub has a large space to play in the shape design. By designing the magnesium alloy hub tire wider, the forward grip, braking effort and vehicle control can be enhanced. Due to the lighter weight of the magnesium alloy hub, the overall mass of the vehicle can be reduced, thus reducing the fuel consumption of the vehicle. The magnesium alloy hub can absorb the vibration of the vehicle and improve the ride stability of the vehicle. However, it should be noted that aluminum alloy hub has more complex processing technology and higher cost, and is prone to corrosion problems. In addition, compared with the traditional alloy material, the magnesium alloy has a relatively low elastic modulus, if the hub deformation does not exceed the limit range, it will recover quickly, which reduces the seismic sensation of the vehicle. Compared with carbon steel, magnesium alloy structure has several times more elastic and recoverable deformation. Even if the car road surface is not smooth, aluminum alloy wheels can still reflect its anti-bump advantage.