Abstract: The study area is the wild Asian elephant’s range(3613.32 hm2) in the Nangunhe area of China from 2002 to 2006.In the research,Braun-Blanque methods in plant community sampling were applied.The ecological factors were extracted and analyzed depended on spatial information technique(GPS,RS and GIS).And Principal Components Analysis(PCA) and Multi-factor Analysis were used to rank the importance of the ecological factors.On the basis of that,the habitat quality were ranked by 9 habitat factors and classed into five grades.The result shows that:① The area proportion of the best quality habitat,the better habitat,the mediate habitat,the good habitat and the unoccupied habitat respectively were 32.14%,8.97%,16.88%,40.77%,1.24%;② The weight fractions of the ecological factors are that the distance to water resources is 0.1620,slope aspect is 0.1493,altitude is 0.1431,vegetation types is 0.1414,the distance to mineral ponds is 0.1224,slope gradient is 0.1050,the bog distance is 0.069 2,the distance to the settlements is 0.065 6,and NDVI is 0.0420;③ The frequent choice of Asian elephants for the distance to water resources is 200—400 m,slope aspect is south,altitude range is 700—900 m,vegetation type is semi-evergreen monsoon rainforest,the distance to mineral ponds is 0—1000 m,slope gradient is 8°—15°,the distance to bogs and settlements are 2000—3000 m and 4000—5000 m,and NDVI is always more than 0.5.