High-surface-quality and high-precision automobile luggage rack aluminum profile

The invention discloses a high-surface-quality and high-precision automobile luggage rack aluminum profile which comprises an automobile body and a clamping buckle, a wind shield and a luggage rack are arranged over the automobile body, the wind shield is located at one side of the luggage rack, multiple folding mechanisms are arranged at the two sides of the luggage rack, and the folding mechanisms support and expand the luggage rack. A motor drives a threaded rod to rotate, further when the threaded rod rotates, a threaded block can be forced to transversely move on a lower frame body of the motor, a first support is forced to be pressed downwards or ascended under driving of the rotating shaft, a sliding block slides on the limiting rod, and therefore stretching or folding on the lower frame body and the upper frame body of the motor can be completed. An operator can pull a shielding part , so that the shielding part slides in a limiting frame of the winding mechanism, the winding mechanism can be pulled to move in the moving process of the shielding part, a torsion spring of the winding mechanism deforms, and therefore the shielding part can cover the top of the upper frame body of the winding mechanism.