NOVELTY - Food residue fermentation device comprises tank portion for sealing fermentation tank, which comprises an inner wall, heat insulating layer and outer wall. A perpendicular bisector of fermentation tank is fixed with a hollow chamber rotating shaft through a bearing. A lower blower is communicated with a hollow chamber of the rotating shaft. The rotating shaft comprises an agitating vane. The agitating vane is a hollow chamber portion. The agitating vane is distributed with an air outlet hole.    USE - The device is useful for fermenting food residue for producing organic fertilizer.    ADVANTAGE - The device exhibits fermentation value of 99%. The device can work normally at -30 degrees C, and has small floor, high automatic degree, and simple operation procedure without adjusting moisture.    DETAILED DESCRIPTION - Food residue fermentation device comprises tank portion for sealing fermentation tank, which comprises an inner wall, heat insulating layer and outer wall. A perpendicular bisector of fermentation tank is fixed with a hollow chamber rotating shaft through a bearing. A lower blower is communicated with a hollow chamber of the rotating shaft. The rotating shaft comprises an agitating vane. The agitating vane is a hollow chamber portion. The agitating vane is distributed with an air outlet hole. The hollow chamber on the rotating shaft is communicated with the hollow chamber on the agitating vane. A one-way ratchet wheel is fixed on the bottom portion of the rotating shaft out of the bottom of a fermentation tank. Two ends of a power arm with a pallet are hinged with an oil hydraulic cylinder. The top portion of the fermentation tank comprises feeding opening, and track hopper elevation bracket, which is at the feeding opening. The hopper elevation bracket comprises hopper elevation trolley in walking coordination, and the bottom portion of the fermentation tank comprises discharge opening.    DESCRIPTION OF DRAWING(S) - The figure shows perspective view of the food residue fermentation device.