A method of geometry correction of aerial photo and topographic map by ERDAS Imagine 8.5 is discussed.After cursory image interpretation and field investigation,the actual situation of land utilization in the investigated region was classified and its interpretation signs were established.Taking Arc/Info GIS 9.0 as platform and adopting its ARCEDIT module as the basic interpretation module,the feature information of images was extracted by visual interpretation.The data analysis and graph grooming were made by ArcView 3.3,so the goals of map classification,data and map output were achieved.For the high resolution of aerial photo,reasonable selection of control points as well as reasonable arrangement of interpreting procedures,the precision of image interpretation is high.