Abstract: A die casting method using a die casting machine having a fixed die, a movable die and an injection mechanism includes the following steps (a) through (d) of: (a) clamping the movable die to the fixed die; (b) injecting by the injection mechanism the molten metal formed of alloy material into a cavity while the fixed die and the movable die are being clamped to each other; (c) separating the movable die from the fixed die before the alloy material is completely coagulated and shrunken in the cavity; and (d) taking out a product formed of the alloy material from either the movable die or the fixed die after the movable die has been separated from the fixed die.