Abstract: The infrastructure of the grounderwater resources and environment information system of southwest Karst area is introduced. The aim is to analysis the spatial distribution of the groundwater resources, environment, geological calamity and hydraulic engineering by means of the database and spatial analysis method in GIS. The systemic database is made up of spatial database and attribute database. The functions of the grounderwater resources and environment information system of southwest IKarst area can be divided into four parts: datum updating, information querying,spatial analysis and ploting.