As there is no independent intellectual property rights for domestic semiconductor sorter system now, a program for designing an intelligent sorting machine control system based on PLC was put forward. The intelligent sorting machine system which puts IPC as the host computer, Yaskawa MP2310 as slave, constitutes closed loop control system through servo driver which controls the servo motor. It not only achieves accurate position control but also meets the accuracy requirements of the semiconductor chip that is sorted. First of all, a flow chart about the loader part was presented, then the process about the loader part was introduced in detail, and some typical PLC program of loader part was given. The most important is that the problems of teaching the table, fast sorting chips were resolved. The system is reasonable, reliable, stable in actual use.