The invention relates to a casting mould. Wherein, said casting mould comprises: a metallic mould and a sand mould; said sand mould comprises: a riser part formed at the reverse side of opposite surface of metallic mould; an open part (25) which will be closed when assembling mould to form a mould camber; and a wall part (24) around said open part that projected towards to the metallic mould morethan the surface of metallic mould inside the mould chamber; said wall part is mounted with a cutter part to connect the inner and outer sides of wall part; the casting method comprises: assembling mould that assembling the sand mould and metallic mould to form mould chamber; irrigate process that irrigating metallic fused liquid to the mould chamber; opening mould that keeping the cast (7) at thesand mould and separating the sand mould and the metallic mould; and the cooling process that dipping the sand mould with cast into cooling groove while the open part of sand mould is lower. With said method, in the cooling process, the air bubble (X) left in the inner side (S) will be discharged via the cutter part (25), to effectively process cooling or quench.