Made use of remote sensing information which was greatly integrated and highly summarized and combined with relative hydrogeological data in Enkou coal mine, the main factors affecting karstification of land surface were analyzed. The image features of lithological character, geological structure, hydrogeological conditions and karst landform were discribed. Based on what mentioned above, this paper put forward the interpretation keys of karstification and pointed out that this qualitative interpretation can be the base of the quantitative study of karstification level.