The invention discloses a vertical iron-impurity-removing and mixing tank device with uniformly distributed magnetic rings. The device consists of a stirring tank body, a tank cover arranged on the stirring tank body and a stirring structure arranged in the stirring tank body; the middle part of the upper end of the tank cover is connected with a fixing ring; a position limiting shaft sleeve is fixedly connected in the fixing ring; a rotating shaft penetrates through the position limiting shaft sleeve; a rotating shaft under the tank cover is connected with a stirring mechanism; and the stirring mechanism is composed of scraper plates, liquid mixing rods, mixing blades, a dispersing disc, iron removing sleeves and permanent magnets. According to the invention, the stirring mechanism is arranged to facilitate the cleaning of the iron impurities adsorbed by the permanent magnets of the stirring mechanism and the internal cleaning of the stirring tank body. After the tank cover is connected with the stirring tank body, a servo motor is started to work, and the stirring mechanism is driven to rotate through the rotating shaft, so that the removal of iron impurities in a material liquidis completed while the material liquid is mixed and stirred. The device provided by the invention is convenient and efficient, and is suitable for the mixing operation of a material or a material liquid containing iron impurities.