The invention discloses a metal bismuth slurrying tank which comprises a tank body. An injection port and a discharge port are formed in the tank body, a feed valve is mounted at the injection port, adischarge valve is mounted at the discharge port, a stirring device and a cleaning device are mounted in the tank body and can vertically slide, the stirring device is used for stirring raw materialpowder in the tank body, the cleaning device is used for cleaning the inner wall of the tank body, a power conversion component and a power device are mounted on the tank body, the power device provides power for vertical movement of the stirring and the cleaning device, and the power conversion component is used for distributing the power generated by the power device. The metal bismuth slurryingtank has the advantages of reasonable structural design and convenience in use. By coordination of the cleaning device, the power conversion component and the power device, the slurrying tank is automatically cleaned, labor is replaced, manpower and material resources are saved, catalysts and cleaning liquid can be added by the cleaning device, the manufacture and use cost of the tank is saved, and manual maintenance is reduced.