Abstract: Stability subarea and factor analysis of landslides are the key problems of engineering treatment zonation.The stability zonation can be realized by constituting compound decision model of fuzzy clustering and grey correlation analysis.Firstly,based on the geological conditions of Guanjia landslide,the stability zonation is proceeded through fuzzy clustering.By geological investigation and attribute property analysis,the landslide is divided into deep easy skating area and shallow slumping area.It is also said that the gravel soil area which can slide deeply and the gravelly clay area which can slide shallowly or slump partially.Secondly,by taking the factor decision matrix to perform grey correlation analysis,the influence degree of factors is adjudicated.The results indicate that the primary factors of easy skating area are weight,groundwater and sliding force,and the primary factor of shallow slumping area is sliding force.In addition,the compound decision model is confirmed to be of important guiding significance by engineering treatment evaluation.