The double-screw turning machine is used for the fermentation and turning of organic waste such as livestock and poultry manure, sludge garbage, sugar factory filter mud, dross cake and straw sawdust. It is widely used in large-scale organic fertilizer plants and compounding Fermentation and decomposing operations in fertilizer plants, sludge waste plants, horticultural farms, and Agaricus bisporus planting plants, etc. It is suitable for aerobic fermentation and can be used in conjunction with solar fermentation chambers, fermentation tanks and transfer machines. It can realize the function of using multiple slots in one machine when it is used together with the mobile machine. The matching fermenter can discharge continuously or in batches. High efficiency, stable operation, sturdy and durable, even turning and throwing.