Abstract: An intelligent quantitative rapid loading optimization system based on master-slave variable frequency control is proposed in this paper. The hardware and software design scheme of the intelligent quantitative rapid loading system with EPEC 2024 controller as the core is emphasized. The master station controller periodically uses TCP/IP communication to obtain the information of coal feeder, belt conveyor and coal storage bin, and completes the intelligent control of all devices of the loading system. At the same time, all the information of loading system is transmitted to the man-machine monitoring platform for real-time display. Finally, the practical application analysis is completed. The application analysis results show that the optimized loading system can meet the design requirements, improve the control accuracy, stability and intelligence level of the loading system, and help to improve the safety factor and loading efficiency of the loading system in coal preparation plant.