首先讨论了基于专家知识的水电厂状态检修方法。针对国内外水电厂主设备状态检修系统的应用中存在的问题,提出了状态检修系统、计算机监控系统和管理信息系统等多系统集成的新思路。重点介绍了水电厂主设备状态监测、诊断与检修决策系统的系统框架和相应功能模块。 First of all, the state maintenance method of hydropower plant based on expert knowledge is discussed. Aiming at the problems existing in the application of the condition maintenance system of main equipments in hydropower plants at home and abroad, a new idea of ​​multi-system integration such as condition inspection system, computer monitoring system and management information system is put forward. This paper mainly introduces the system framework and the corresponding functional modules of the main equipment condition monitoring, diagnosis and maintenance decision-making system in hydropower plant.