Regionalization of ecological function is the basis for understanding the function of ecosystem,evaluating the differences and characteristics of ecosystem and framing countermeasures for resuming degrade ecosystem.In this paper,based on the synthetically analysis of the characteristics of ecological environments of Jiangxi Province,the 80 administrative units are consider as the regionalization objects,the principles of ecological regionalization were adopted,indices of ecological regionalization were proposed,and a comprehensive method of combing quantitative analyses and qualitative analyses were utilized for the three levels units of the whole province.The main quantitative analyses is performed on the DPS7.05,it includes cluster analyses and principal component analyses;the quantitative analyses includes superimpose graphics,leading factors and intelligent determination were used to optimize the subarea borderline.Geographical information systems(arcview GIS3.03) were taken into account to chart map.The results shows that Jiangxi Province could be ecological characterized as 4 ecoregions,13 sub-ecoregions and 45 eco-functional zones.The results of this research have a significant value to the maintenance of ecological security,ecological programming and eco-environmental protection of Jiangxi Province.