Aimed at the problems that high failure rate and lack of operability along with auto-loader in teaching and training process. On the basis of analysis of auto-loader’s structure and operating principle, the control system of auto-loader with PLC is designed, according to the teaching task requirement of auto-loader, the overall plan of the control system and the hardware subsystem and software subsystem are designed severally, the loading process can be controlled automatically and the real-time data is realized and shared, it was proved that the reformation scheme is reasonable and achievable, which offers reference value for improving reliability and practical applicability of auto-loader in teaching and training.