Abstract: Research on division of geoenvironment is of great significance to protect the geoenvironment effectively and to perform the functions of the geo-environment protection and management.This proposal is not only the pilot project for nationwide geo-environment classification carried out by Planning Division of Ministry of Land and Re-sources,but also an essential part of the sustainable geo-environment protection for Jiangsu Province.It was con-ducted as first maturely demonstration project,and therefore the implementation of this proposal will provide the fundamental principles for any further researches.Basing on the analysis of concept and connotation of geoenviron-ment regionalization,we established the ideas of geoenvironment regionalization in Jiangsu which included a com-prehensive division and 6 specialized divisions.Considering the natural and social attributes of the geo-environ-ment,we established the evaluation index system for 6 specialized divisions,i.e.,geological disasters (preven-tion),mine geological environment (protection),mountain resource conservation,geological heritage protection, groundwater pollution prevention,and soil pollution prevention.The evaluation of 6 specialized divisions was car-ried out by the space analysis module of MapGIS.The geoenvironment comprehensive division had been done based on the results of specialized divisions.The first order of comprehensive geological environment division is oriented to the geological environment problems,and the second order of division is oriented to the geological environment function.This paper offered geoenvironmental protection plan proposals from two aspects of geological resources security and geological environmental safety.