The utility model discloses a small -size chinese medicine grinder with selection by winnowing function, which comprises a pedestal and a case body, the base left and right sides is equipped with the gyro wheel, and the base top is equipped with the box, is equipped with the buffering landing leg between box lower extreme both sides and the base, and the buffering landing leg comprises telescopic link and flexible cover, and the buffering landing leg outside is still overlapped and is equipped with buffer spring, be equipped with the screen plate in the box, during the screen plate right -hand member inlayed the draw -in groove of establishing in the box inner wall, the screen plate left end passed box left side wall to connect the shrouding, the shrouding outside is equipped with the pull ring, and the screen plate below is equipped with the collecting hopper, and the selection by winnowing pipe is connected to the discharge end of collecting hopper, and selection by winnowing pipe left end link bit is equipped with the air -blower in the left intake pipe of box in, and selection by winnowing pipe right -hand member passes the box, and selection by winnowing pipe right -hand member mouth can dismantle and be equipped with an album dirt sack, and selection by winnowing pipe downside is equipped with hopper, the utility model is simple and reasonable in structure, being convenient for carry, have selection by winnowing and deironing function, having guaranteed the processingquality of material, the practicality is strong.