The utility model relates to a clear stifled device of coal distribution bunker, including the stifled drill bit of the qing dynasty that connects gradually, flange, worm, worm wheel, speed reducer, motor, stifled head position in coal distribution bunker's the lower part of boring of the qing dynasty, the stifled drill bit of the qing dynasty pass through the flange and fix on the worm, by motordrive, along the action of vertical orientation stroke. This device has utilized motor drive's worm and gear transmission mechanism, adjusts suitable exerting oneself, the clear stifled drill bit of control along the stroke action of vertical direction through the speed reducer. When coal distribution bunker chute blockage disheveled coal, to dredge through clear stifled drill bit, the device is simple feasible, and the artifical clear stifled method of contrast can alleviate operation workman's the amount of labour for the clear stifled time, ensure coal conveying system's normal operation.