Plaster pulverizing mill

The invention discloses a plaster pulverizing mill and belongs to the field of plaster processing equipment. The plaster pulverizing mill is to solve the technical problem of how to realize even pulverization of plaster, avoid mixing of large grains of the plaster in plaster powder, improve quality of the plaster powder, and ensure following use effect. According to the technical scheme, the structure of the plaster pulverizing mill comprises a base, a millstone device is arranged on the base and a driving device which is matched with the millstone device in a rotating mode; the millstone device comprises a millstone box body; a screen mesh is arranged on the inner side wall of the millstone box body; a millstone fixing door is arranged on one side surface of the millstone box body; a material feeding cylinder is arranged on one side surface, away from the millstone box body, of the millstone fixing door; a material discharging cylinder is arranged at the lower end of the millstone boxbody and is positioned b