The double screw turning machine is suitable for fermentation of livestock waste, sludge waste, sugar refinery filter mud, straw sawdust and other organic wastes. It overcomes the limitation of the width and depth of the traditional groove turning machine. The turning depth can reach 1.6 meters and the turning width can reach 12 meters, which greatly improves the space utilization ratio.After the improved double axis reverse rotation movement, it has the function of turning, mixing and oxygenation, improving the fermentation rate, decomposing the composting quickly, preventing the formation of the odor, saving the energy consumption of oxygen filling, and shortening the fermentation time.