讨论了水电厂主设备状态检修系统的国内外研究现状 ,分析了当前应用系统存在的问题与不足。针对状态检修系统应用中存在的问题 ,提出了状态检修系统、计算机监控系统和管理信息系统多系统集成的新思路。最后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模块的功能 The status quo of domestic and foreign research on condition maintenance system of main equipment of hydropower plant is discussed, and the problems and shortcomings of current application system are analyzed. Aiming at the existing problems in the application of state maintenance system, a new idea of ​​multi-system integration of state maintenance system, computer monitoring system and management information system is put forward. At last, the system framework of main equipment condition monitoring, diagnosis and maintenance decision-making system of hydropower plant and corresponding module’s functions are mainly introduced.