The invention discloses a bimetal glass die, which comprises a cast iron male die, a male die copper cavity, a cast iron female die and a female die copper cavity, wherein the cast iron male die and the cast iron female die are arranged symmetrically; the male die copper cavity is formed inside the cast iron male die; the female die copper cavity is formed inside the cast iron female die. According to the bimetal glass die, key positions of an inner cavity are made of a copper alloy, so that the bimetal glass die is high in heat conducting speed, high in oxidation resistance and long in service life; the outside is made of cast iron, so that the cost is low, and convenience is brought to processing; moreover, the inner cavity can be detached and replaced after being worn, so that higher cost performance is realized.