When the temperature detection device detects that the baking pan is still in a high temperature state (a temperature range that is likely to cause burns to users, such as above 60 degrees), the controller can identify the signal and control the electromagnet assembly to be in a continuous power-on state (at this time, the switch cannot The electromagnet assembly cannot be powered off), the magnet guide on the baking pan and the electromagnet assembly on the base are always in suction assembly, so that the baking pan cannot be removed; when the temperature detection device detects that the baking pan has dropped to the set temperature (such as 60 degrees), the controller recognizes the temperature signal and controls the electromagnet assembly to be in a state that can be powered off by the switch, that is, the user presses the switch at this time, the electromagnet assembly can be powered off, so that the electromagnet on the base The assembly loses its magnetic force, allowing the pan to be removed easily.