Shell, preparation method thereof and electronic equipment

The invention discloses a shell and a preparation method thereof, and electronic equipment, and the shell comprises a substrate which comprises a central region and an edge region surrounding the central region; a part of the substrate is shielded by a shielding plate so that a film material can be sputtered to the film coating layer on the edge area, the width of the film coating layer is 0-30 mm, the inner edge and the outer edge of the film coating layer are a film inner ring and a film outer ring respectively, the thickness of the film outer ring is larger than that of the film inner ring, and the thickness of the film outer ring is larger than that of the film inner ring. The thickness of the coating layer gradually changes in the direction from the edge area to the center area so that the color gradually changes. According to the shell provided by the embodiment of the invention, the gradual change form of the gradual change color film can be increased, and the wide application of the shell is improved.