The utility model discloses an exergonic device for a superconducting iron remover magnet, which comprises a superconducting electromagnet coil supplied with power by a power supply. The power supplying loop of the superconducting electromagnet coil is connected in series with a switch logically controlled by the power supplying state of the power supply; two ends of the switch are connected in parallel with an exergonic element; two ends of the power supply are reversely connected in parallel with a demagnetizing diode; two ends of the exergonic element are connected in parallel with a fan; the exergonic element is a branch circuit which is connected in series with the exergonic diode, wherein the conducting direction of the branch circuit is consistent with the current direction of the switch; the exergonic element is a resistor; and two ends of the superconducting electromagnet coil are connected in parallel with a branch circuit which is connected in series with a superconducting electromagnet coil protecting diode. With the structure, the exergonic device for the superconducting iron remover magnet has a reasonable structure, demagnetizes rapidly, is safe and reliable, can be used for various superconducting magnets, is beneficial to improving the demagnetizing safety and shortening the demagnetizing period and is very convenient to operate.