The invention relates to an accurate separation feeding box. The accurate separation feeding box comprises a material box, a buffering plate, a screen, an impurity removing door and a discharging pipe. The buffering plate is obliquely arranged at the middle portion of the interior of the material box, and the buffering plate is located below a discharging port of a pulp pipeline. The screen is horizontally arranged at the middle portion of the interior of the material box and is connected with the buffering plate. The impurity removing door is arranged on the side, away from the buffering plate, of the screen and on the side wall of the material box. The discharging pipe is arranged below the impurity removing door, and the discharging pipe communicates with the bottom of the interior of the material box. An ore charge box is arranged at the position, corresponding to the screen, of the outer wall of the material box, the ore charge box communicates with the material box, and a permanent magnet is arranged in the ore charge box. Compared with the prior art, the permanent magnet in the ore charge box can magnetically attract iron ore in pulp, accurate separation of ore is achieved,the impurity removing efficiency is accelerated, and the ore separation precision is high.