A separable cooking appliance, comprising: an electromagnetic induction type wireless power supply system with a load sudden-change protection circuit having a wireless power supply end; a wireless power receiving end having a resonant receiving unit and a rectifying and voltage-stabilizing unit connected to the resonant receiving unit, wherein the rectifying and voltage-stabilizing unit is configured to process electric energy received by the resonant receiving unit to output a voltage-stabilized power supply; and a load; wherein the load sudden-change protection circuit comprises: an overvoltage protection unit and an under-voltage protection unit, characterized in that the overvoltage protection unit being connected to the voltage-stabilized power supply and the load, respectively, and the overvoltage protection unit being configured to turn on the load when the voltage of the voltage-stabilized power supply is higher than a first preset voltage due to sudden turn-off of the load; and the under-voltage protection unit being connected to the voltage-stabilized power supply and the load, respectively, and the under-voltage protection unit is configured to turn off the load when the voltage of the voltage-stabilized power supply is lower than a second preset voltage due to sudden turn-on of the load. an electromagnetic induction type wireless power supply system with a load sudden-change protection circuit having a wireless power supply end; a wireless power receiving end having a resonant receiving unit and a rectifying and voltage-stabilizing unit connected to the resonant receiving unit, wherein the rectifying and voltage-stabilizing unit is configured to process electric energy received by the resonant receiving unit to output a voltage-stabilized power supply; and a load; wherein the load sudden-change protection circuit comprises: an overvoltage protection unit and an under-voltage protection unit, characterized in that the overvoltage protection unit being connected to the voltage-stabilized power supply and the load, respectively, and the overvoltage protection unit being configured to turn on the load when the voltage of the voltage-stabilized power supply is higher than a first preset voltage due to sudden turn-off of the load; and the under-voltage protection unit being connected to the voltage-stabilized power supply and the load, respectively, and the under-voltage protection unit is configured to turn off the load when the voltage of the voltage-stabilized power supply is lower than a second preset voltage due to sudden turn-on of the load. an overvoltage protection unit and an under-voltage protection unit, characterized in that the overvoltage protection unit being connected to the voltage-stabilized power supply and the load, respectively, and the overvoltage protection unit being configured to turn on the load when the voltage of the voltage-stabilized power supply is higher than a first preset voltage due to sudden turn-off of the load; and the under-voltage protection unit being connected to the voltage-stabilized power supply and the load, respectively, and the under-voltage protection unit is configured to turn off the load when the voltage of the voltage-stabilized power supply is lower than a second preset voltage due to sudden turn-on of the load.