Abstract: In view of the characteristics of high vegetation coverage and little bedrock exposure in Dongning area, by comparison of remote sensing images with different resolutions, based on the visual interpretation, the authors use the methods of ratio analysis, band combination and 3D elevation rendering to study the relation between topography, geomorphology and lithology, and establish the interpretation marks by combining indoor interpretation and field verification. The stratigraphy, intrusive rocks and fault structures in the area are interpreted respectively. The results are effective.