The invention provides a mounting method for embedding magnetic steel into a vehicle. The two pieces of magnetic steel are used, wherein according to magnetic coercive force opposite pulling, in the vehicle production process, one of the pieces of magnetic steel is embedded in advance, the embedded part is protruded to serve as a mark, and the other piece of magnetic steel is placed at the position, corresponding to the mark, outside a vehicle roof to complete the task that the vehicle needs to be mounted; and as for other vehicles such as solar cell panel vehicles, through the mounting methodfor embedding the magnetic steel into the vehicle, parts or structural parts needing to be mounted are mounted at the tops of the vehicles; as for another task, namely a telescopic sun-proof and dust-proof vehicle cover, one set of opposite pulling magnetic steel supports (the vehicle includes four or more sets) is placed at the protruded position, corresponding to the mark, outside the vehicle roof, the radian of the top of the vehicle and the height of telescopic pipes are adjusted through the supports, extension springs are mounted in the telescopic pipes, during using, the telescopic pipes are pulled out to be fixed through the corresponding piece of magnetic steel, the magnetic steel is loosened, and the telescopic pipes return to the original positions; and a sun-proof cloth is placed at the tail ends of the telescopic pipes (the vehicle includes the two sets of telescopic pipes), and the cooling efficiency is effectively improved through a support-type air convection sun-protection technology.