The invention relates to an efficient feeding box which comprises a material box, a buffer plate, a screen, an impurity removal door and a discharging pipe. The buffer plate is obliquely arranged in the inner middle of the material box and positioned below an ore pulp pipeline outlet, the screen is horizontally arranged in the inner middle of the material box and connected with the buffer plate, the impurity removal door is arranged on the side wall of the material box of one side of the screen far away from the buffer plate, the discharging pipe is arranged below the impurity removal door andcommunicated with the inner bottom of the material box, an inclined table is arranged at the screen close to the impurity removal door and inclined downwards from the impurity removal door to the screen. Compared with the prior art, the inclined table is inclined downwards from the impurity removal door to the screen, small ores can be blocked, impurities are removed through the impurity removaldoor, the removing efficiency of the impurities is improved, and ore dressing accuracy is high.