Integrated aerobic-anaerobic fermentation combined drying fertilizer preparation system

The utility model relates to an integrated aerobic and anaerobic fermentation combined drying fertilizer preparation system, which is used for producing biogas and fertilizers and comprises an aerobicfermentation tank, an anaerobic fermentation tank, a biogas residue drying cavity, a hot water circulating pipe and a solar heat collector. The biogas residue drying cavity is arranged outside the aerobic fermentation tank in a sleeving mode, the anaerobic fermentation tank is arranged over the aerobic fermentation tank, and the solar heat collector is connected with the hot water circulating pipe through the circulating pump. A straw inlet is formed below the aerobic fermentation tank, and a spiral material stirrer and a decomposed material conveyor are arranged in the aerobic fermentation tank; the bottom of the anaerobic fermentation tank is connected with the top of the aerobic fermentation tank and connected with the biogas residue drying cavity through a biogas residue conveying pipe with a biogas residue p