The invention discloses a mechanical 
medicine dispensing device. The mechanical 
medicine dispensing device comprises a box body, a 
cam mechanism, a sliding rod mechanism, a grabbing mechanism and a 
rotating disc; the 
cam mechanism is rotationally arranged in the box body, one end of the sliding rod mechanism is located in the box body and matched with the 
cam mechanism, the other end of the sliding rod mechanism penetrates out of the box body, and the cam mechanism is used for promoting the sliding rod mechanism to ascend, descend and horizontally move; the grabbing mechanism is rotationally arranged at the end, penetrating out of the box body, of the sliding rod mechanism, and the sliding mechanism drives the grabbing mechanism to synchronously move in the ascending, descending and horizontal moving processes; and the 
rotating disc is connected with the outer side of the box body and located on the horizontal moving 
stroke of the grabbing mechanism, and the bottom of the 
rotating disc is in transmission connection with the cam mechanism. By the adoption of the design, the cam mechanism and the sliding rod mechanism matched with the cam mechanism are arranged, so that the 
reciprocating motion of the grabbing mechanism is realized, grabbing and putting down of medicines are realized, and then the 
medicine dispensing work is realized; and the structural design is ingenious, the cooperation is reasonable, the working intensity of 
medical staff is reduced, 
manual medicine dispensing is replaced, medicine dispensing errors are avoided, and the working efficiency of medicine dispensing can be improved.