Abstract: Abstract: The accelerated process of urbanization and industrialization inevitably impacts the geo-environment and affects the function of traditional geo-environment. Therefore, a reasonable delineation of the geo-environment protection area is of great significance for the effective protection of geo-environment and the fulfillment of the functions of the geological environment protection management. Based on a detailed analysis of geo-environment information and achievements obtained in Jiangsu province and considering the natural attribute of the geo-environment，the authors established geo-environment comprehensive division which includes six specialized divisions，namely geological disasters (prevention), mine geological environment (protection), mountain resource protection, geological heritage protection, groundwater and soil pollution prevention. On one hand, the six specialized divisions establish the evaluation index system according to certain criteria for their respective purposes whose results provide the basis for a special planning; on the other hand, based on an analysis of the advantages of the six specialized divisions and taking full account of the geo-environment factors that the specialized divisions do not include, the authors set up the comprehensive evaluation system of geo-environment at two levels, which can provide the basis for the geo-environment protection planning.