The design of an automatic sorting device with low cost and high efficiency is presented in the paper,which regards programmable logic controller(PLC) as the master controller and combines pneumatic device,sensing technology,position control and other technology to implement automatic selecting of the products live.

On the basis of the design of the systematic mechanical structure,the corresponding controlling systems of automated medicine supplying device,automated medicine fetching device,automated medicine sorting device were designed,and the study on the controlling method of each executing mechanism was carried out.