The utility model discloses a novel vertical stirring mill. The device comprises a driving device, an upper machine body, a transmission device, a barrel, a spiral stirrer and a sorting tank, the driving device, the upper machine body and the cylinder body are sequentially connected from top to bottom through connecting bolts; the spiral stirrer is vertically suspended in the cylinder body; the transmission device is arranged in the upper machine body; the upper end of the transmission device is connected with the driving device; the lower end of the transmission device is connected with the spiral stirrer through an end face key and a bolt fastener; a slurry inlet, an upper discharge port and a lower discharge port are formed in the outer circular surface of the sorting tank body; the slurry inlet is connected with an overflow port in the outer circular surface of the lower part of the upper machine body through a reducer pipe; the upper discharge port is connected with a process equipment hydrocyclone through a process pipeline, the lower discharge port is connected with a circulating pump through an inlet pipeline of the circulating pump, and a discharge port of the circulatingpump is connected with a return port in the side wall of the lower portion of the barrel through an outlet pipeline, so that a circular flow grinding classification system is formed, and stable and efficient operation of the mill is achieved.