The invention belongs to the field of environmental protection relevant to kitchen waste treatment and relates to a kitchen waste fermentation bin supplying heat through air energy and solar energy, The fermentation bin comprises a solar heat collection array, a first temperature detector, a first check valve, a first circulating water pump, a solar water tank, a second temperature detector, a second check valve, a controller, a second circulating water pump, a kitchen waste fermentation bin body, a double-S hot water circulating loop device, a third check valve, a third circulating water pump, an expansion water tank and an air energy unit, wherein the double-S hot water circulating loop device comprises a water inlet pipe, a water outlet pipe and a partition plate. The kitchen waste fermentation bin can provide heat for kitchen waste fermentation by use of the air energy and the solar energy, advantage complementation on heat supply of the air energy and the solar energy is brought into full play, and electricity cost is saved; and the double-S hot water circulating loop device can make a heat carrier fully flow by the bottom of the kitchen waste fermentation bin and transmit heat, so that continuous stability of fermentation temperature is maintained.