The utility model of fireproof electric iron is formed by adding a control button, a midget universal relay and a green indicator light to the thermoregulation type electric iron. The electric iron is characterized in that the iron changes the situation that the heating element works automatically time after time and fire accidents are easily caused when the original thermoregulation type electric iron is electrified and the user leaves. When the temperature rises up to achieve the upper limit value of safe working temperature, the working current of the heating element is not directly cut by the normally closed contact of the thermoregulation element. The working current of the heating element is cut by the normally open contact of the midget universal relay so that the heating element doesn't work automatically after the normally closed contact of the thermoregulation element goes back and is switched on.