The utility model relates to a cooling device, including air -supply line, connecting pipe and play tuber pipe, the air -supply line with go out the tuber pipe and be the ring pipe, the air -supply line switches on with going out to connect through the connecting pipe between the tuber pipe, is equipped with at least one air intake on the air -supply line, the several exhaust vent of evenly arranging on the play tuber pipe. The local radiating effect of this cooling device messenger's mould rational in infrastructure is reliable, has improved because the phenomenon of foundry goods shrinkage cavity that the wind -force skewness arouses and shrinkage porosite, has promoted the quality of product.