Abstract: The purpose of this paper is to set up the eco-environmental information database of the whole Changjiang River basin. By means of the analysis of user requirement, data requirement and function requirement, the function design, database design and interface design have been carried out. The functions of the database include data editing, data query and retrieval, data exporting, database management and so on. On the basis of the general design of the information database, a demonstration area database has been built in Wudongde Hydroelectric Station. The demonstration area database uses object-oriented design idea and develops a land eco-enviromental information system based on Visual Basic and ArcGIS Engine.