The invention provides an animal waste fermentation machine. The animal waste fermentation machine comprising a fermentation tank body, a cover body, a feeding hopper, a first control valve, a water inlet pipe, a second control valve, an air pressure sensor, a pressure relief pipe, a third control valve, a biogas leading-out pipe, a fourth control valve, a discharging pipe, a fifth control valve, a stirring module, a cleaning module, a temperature adjusting module used for adjusting the fermentation temperature, and a walking supporting module arranged at the bottom of the fermentation tank body. According to the animal waste fermentation machine, manure in the fermentation device can be fully stirred through movement of a stirring device, and the fermentation temperature can be flexibly and accurately controlled and adjusted, so that the fermentation efficiency and quality of the manure are improved; and manure adhered to the inner wall of the fermentation device can be cleaned conveniently, so that waste of materials is avoided, and the device has high stability in the working process and can be moved in a time-saving and labor-saving manner when needing to be moved.