With "risk prevention" as the core, it aims at improving the level of safe utilization of nuclear facilities and nuclear technology. Through the comprehensive use of information technologies including computer technology, artificial intelligence technology, big data analysis, expert system and physical process mechanism modeling, in-depth study of operation characteristics and features of nuclear power plants are carried out, so as to optimize the operating conditions and parameters, and timely and accurately analyze and predict the causes of accidents and provide the best disposal measures.