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Geological relics are precious non-renewable natural resources that formed,developed and left over from long evolutional history of the earth due to the internal and external forces of geological process.In recent years,with establishment of geological parks,much attention has been paid to develop and protect geological relics,which bear values in terms of scientific research,tourism and economy.As early as in 1989,UNESCO formed geological relics working group that is responsible for protection of global geological relics.There are widespread and various geological relics existing in Anhui Province.It is important to quickly and effectively find out spatial distribution characteristics,locations,types and amounts of geological relics in the province.Based on multi-sourced and multi-spatial resolution remote sensing data,such as ETM,SPOT-5,RapidEye,QuickBird,WorldView-2,IKONOS,GeoEye,YG-2,Radarsat-2 and air photos,through image preprocess,image enhancement of linear information,image stretching,different band synthesizing for different geological bodies,image feature,hue,spatial combination relation and spectrum feature of various geological bodies were analyzed from different spatial scales.Then,remote sensing interpretation marks for typical geological relics were established,and the main geological relics were extracted by visual interpretation combined with field survey.The results show that there are 180 sites of geological relics in the province and 133 of these sites are significant; regional distribution features of geological relics were got and remote sensing image interpretation marks have been formed for major geological relics,which mainly include: (1) structural features,represented by the Tan-Lu Fault Zone; (2) geomorphologic landscapes,such as the Huangshan granite landform,East Anhui and Lu-Zong volcanic landform represented by the Nvshan caldera in Mingguang City,and the Dashushan volcanic landscape in Hefei City; (3) water body landscapes,represented by the Chaohu Lake; (4) geological hazard relics,represented by Shitai debris flow.