Wire Connection Protection Device

The present application discloses a wire connection protection device of a cooking appliance and an air fryer. The wire connection protection device includes a rigid insulating sleeve sleeved over the connection between the internal wire and power wire of the cooking appliance, with both ends of the rigid insulating sleeve being sleeved over the outside of the outer sheath of the internal wire and the power wire, and a fire sleeve sleeved outside the rigid insulating sleeve. The rigid insulating sleeve improves the structural stability of the connection between the internal wire and the power wire such that it does not loosen easily. The fire sleeve prevents the connection from heating up and catching fire. The rigid insulating sleeve and the fire sleeve collectively insulate the heat source from the inside to prevent the fire from spreading, so as to improve the safety at the wire connection.