A comprehensive safety evaluation system taking the most influential factors into account has been developed to evaluate the reliability of hydraulic metal structures.Applying the techniques of AI and DB,the idea of a one-machine and three-base system is proposed.The framework of the three-base system has been designed and the structural framework constructed in turn.A practical example is given to illustrate the process of using this system and it can be used for comparison and analysis purposes.The key technology of the system is its ability to reorganize and improve the expert system’s knowledge base by establishing the expert system.This system utilizes the computer technology inference process,making safety evaluation conclusions more reasonable and applicable to the actual situation.The system is not only advanced,but also feasible,reliable,artificially intelligent,and has the capacity to constantly grow. A comprehensive safety evaluation system taking the most influential factors into account has been developed to evaluate the reliability of hydraulic metal structures. Applying the techniques of AI and DB, the idea of ​​a one-machine and three-base system is proposed. Framework. Of the three-base system has been designed and the structural framework constructed in turn. A practical example is given to illustrate the process of using this system and it can be used for comparison and analysis purposes. The key technology of the system is its ability to reorganize and improve the expert system’s knowledge base by establishing the expert system. This system utilizes the computer technology inference process, making safety evaluation conclusions more reasonable and applicable to the actual situation. The system is not only advanced, but also feasible, reliable, artificially intelligent, and has the capacity to ever grow.