To prevent the entrapment of slag, waste, etc., so as to avoid the poor die clamping, regarding a casting apparatus for aluminum alloy-made wheel.

The casting apparatus is composed of a lower mold 2, laid on a base 6 and fixed to the base 6 position, an upper mold 5 arranged so as to shift to the vertical direction and move to the turn-over under state of shifting to the upper part on the lower mold 2 and side molds 3 set under state of dividing into four around the upper mold 5 and arranged so as to be able to slidingly shift to the side direction. A recessed groove 66 for exhausting the slag and the waste 9, is arranged at the position of the side mold sliding surface on the base 6, and approaching sensors 1 are arranged between the side molds 3 and the base 6 setting the lower mold 2.