PURPOSE: To provide a mold cleaning apparatus automating the cleaning of the inner wall of a mold, reducing the load of a worker to a large extent, capable of perfectly performing even the cleaning of the corner part of the inner wall of the mold, eliminating the generation of the flaw of an ingot or the cause of the non-uniformity of heat extraction at the time of casting and capable of casting an ingot of high quality.

CONSTITUTION: A mold cleaning apparatus l has a truck 6 constituted so as to be freely moved in a horizontal direction, the leading frame 10 fixed to the truck 6 through a truck frame 8 and the brush head 14 attached to the leading end frame in a freely up and down movable manner. The brush head 14 has a wire brush 16 constituted of a plurality of wire brush members and the air pressing means and vacuum suction means arranged in the respective wire brush members and expanding the wire brush members outwardly and contracting them inwardly.