Based on community investigation on karst hills of Guilin,and used two-way indicator species analysis (TWINSPAN) and detrended canonical correspondence analysis (DCCA) to quantify classification and ordination of Fengshui woods communities on karst hills of Guilin,we explored the relationships between plant communities’ distribution and environmental factors.The results showed as below:(1)dominant species of tree layer of Fengshui woods communities are mainly Cyclobalanopsis glauca,Croton xiaopadou,Canthium dicoccum,Cinnamomum saxatile,Mallotus philippensis,Sinosideroxylon pedunculatum,Sapium rotundifolium,Albizia kalkora,Loropetalum chinense,Pittosporum planilobum;Dominant species of shrub layer are mainly Bauhinia championii,Decaspermum esquirolii,Alchornea trewioides,Sageretia rugosa,Millettia cinerea,Jasminum seguinii,Millettia pulchra;Dominant species of herbaceous layer are mainly Carex tristachya,Teucrium pernyi,Onychium japonicum,Ophiopogon platyphyllus.(2)29 Fengshui woods plots were classified into 8 different association types.Both TWINSPAN and DCCA made the consistent results.DCCA ordination preferably reflected the ecological relation between the community types and environmental factors.(3)The axis 1 of DCCA mainly reflected the change law of slope aspect.From left to right of the figure of the DCCA ordination,there had the transition of slope aspect from shady slope to south-facing slope,along with the light intensity and dry-hot habitat strengthened,and the altitude gradually reduced.The axis 2 mainly stood for the change of the slope degree and slope position,the slope degree was steeper,and the slope position had the transition from downslope to upslope,along with the rock bare rate increased.(4)The changes of slope aspect and slope degree were the mainly ecological factors which influenced the heterogeneity of Fengshui woods structure and distribution on karst hills of Guilin.