Abstract: Traditional training methods rely on classroom teaching, experience exchange and other centralized training methods, which is no longer suitable for the characteristics of large number of modern employees and high-capacity demand. On the basis of the research on the systematization of safety training, the concept and technical system of a safety training system based on WeChat applet is proposed. The system design is based on the concept combining learning, examination and search, which effectively improves the efficiency of safety training in power plants.