This paper presents a GIS-based analysis of remotely sensed(RS) data for the Du'an Yao Autonomous County of Guangxi Zhuang Autonomous Region, including TM image background data and landform, land use, soil, geological and GPS database data. An RS image integration index system for rocky desertification grades are established. A rocky desertification grade map and a digital soil map of Du'an County are presented. Finally, a connection between different degrees of rocky desertification and soil type, from the viewpoint of spatial correlation, is proposed.