Provinces Sichuan,Yunnan and Guizhou and City Chongqing are situated in the Southwest China and cover an area of 1 125 000 km 2 .In this area land with different types and background has been inordinately exploited and used for a long time past and with the result that regional economy is backward and eco_environment is going to worse. Based on high technological measures of RS(remote sensing),GIS (geographic information system) and GPS (global position system), centered on the core goals of land exploitation utilization and protection and effective route of techniques,consequently and information system of the land resources and envionment can be built and provide timely scientific policy-making supporting for sustainable development of the land resources. For the purpose,such a framework is applicable as well as necessary.