Abstract: The Ministry of Environmental Protection and Chinese Academy of Sciences jointly investigated and evaluated nationwide ecological environmental changes in China from 2000 to 2010. The goal of this project was to acquire information on the change trend of the ecological environment and existing problems on a national scale, and summarize China’s performance and experience in protecting the ecological environment. On the basis of effectively integrating the ecological environment data resources, the ecological environment data sharing service system was developed. Using computer, GIS, database and modern communication technologies, the research solved some key technologies, such as mechanism of spatial data sharing service and database access mode. This system has realized the overall integration, comprehensive presentation, real-time sharing and dynamic service capabilities of multi-source, multi-scale and multi-type ecological environment data, thus providing the system support for deep and wide application of ecological environment data and the management and decision-making.