The utility model discloses an acid dripping tank. The acid dripping tank comprises a tank body, wherein the lower part of the tank body is provided with a plurality of discharge ports, the upper side of the tank body is provided with an acid inlet pipe, a raw material pipe and a stirring device, the stirring device comprises a plurality of motors and a plurality of mixing heads, a spraying pipe is arranged in the tank body, spraying holes are formed on the spraying pipe, and the spraying pipe is connected with a water inlet. The plurality of motors and the plurality of stirring heads are adopted by the stirring device of the acid dripping tank to stir when the acid is added, so that the stirring is uniform, and the phenomena that the regional milk residue solution is overly acidic and acid is wrapped by acidized protein are avoided. Furthermore, the spraying pipe connected with the water inlet pipe is arranged in the tank body of the acid dripping tank, so that the cleaning operation is convenient, the cleaning effect is good, the labor intensity is low, and the water resource is saved; and the acid dripping tank has good use value and application prospect.