The invention discloses a heating and cold supply method for hot stamping molding. The method comprises the following steps: the position of a convex mold of a punching mold is obtained; after the convex mold is stamped according to the obtained position, a switch control signal is sent to a switch control unit to communicate with the switch control unit, so that two first electrodes and two second electrodes of a fifth round angle part and a sixth round angle part in the connecting places between the bottom surface and two side surfaces of the convex mold of the mold are electrified, two third electrodes and two fourth electrodes of a third round angle part and a fourth round angle part between the top surface and two side walls of a concave mold are electrified, and the parts, contactedwith the mold firstly, of plates are heated; and when the position, near the bottom wall of a concave mold cavity, of the convex mold is obtained according to the obtained position, a closing controlsignal is sent to the switch control unit to cut off power supplies of the two first electrodes, the two second electrodes, the two third electrodes and the two fourth electrodes, and meanwhile, a flowing speed and flow control valve is controlled to convey a cooling medium into the concave mold.