Oven

An oven comprises a lighting lamp which is arranged on a furnace body or driving motor which is used to drive a barbecue fork to rotate, wherein an electricity generating device for utilizing residual heat of barbecue to generate electricity is arranged on the furnace body, wherein the electricity generating device comprises a heat collecting element, an electricity generating chip and an output circuit assembly, wherein the output circuit assembly is electrically connected with the lighting lamp or the driving motor. The electricity generating chip is a semiconductor electricity generating chip. The electricity generating device further comprises a heat dissipation element, wherein the heat dissipation element is close to the electricity generating chip. The heat collecting element is connected with the side wall, a bottom board or a top board of an inner cavity of the furnace body. After the furnace body reaches certain temperature, the semiconductor electricity generating chip can generate electricity auto