Disclosed is a system interworking between a cooking apparatus for cooking food and a kitchen device in communication with the cooking apparatus, the system comprising a cooking apparatus comprising a first transmitter transmitting an electrical signal to the kitchen device; and a first controller controlling the first transmitter to transmit the electrical signal to the kitchen device; and a kitchen device comprising a second receiver receiving the electrical signal transmitted by the first transmitter; and a second controller controlling the driving of the kitchen device according to the electrical signal received by the second receiver.