In order to reflect the dynamic changes of the ecological status and the time and space of the Poyang Lake area, but also to trace some variations of the ecosystem,this paper takes Poyang Lake as the research object,through the comprehensive analysis of the characteristics and ecological construction needs of Poyang Lake,and based on the principle of ecological evaluation index selection, the initial construction of the three levels of ecological index system was realized,which can reflect the natural geography, social economy, water environment, water ecology, water conservancy projects and so on.Through the using of computer network, data integration, information processing and database technology to build a Poyang Lake area ecological database and information sharing service platform with practical value,to provide a full range of data services and technical support for the ecological comprehensive management of the Poyang Lake area.