Abstract: To scientifically evaluate the habitat quality grade for the Taxus wallichiana var. mairei, the average dominant tree heights of Twallichiana var. mairei as the dependent variable, and the 8 factors including humus depth, canopy closure, soil thickness, altitude, canopy species composition, slope position, slope aspect and slope shape as the independent variables, we determined and divided the underforest habitat quality grade based on the quantification theory with 117 sample plots of Twallichiana var. mairei in Mingxi County of Fujian Province. The results showed that the habitat quality model for Tchinensis var. mairei has good effect by building with these factors, andthe range of project score was 6697, which showed that those habitat factors significantly influenced the growth of Twallichiana var. mairei.The importance order of those factors affecting the habitat quality of Twallichiana var. mairei was humus depth ﹥ canopy closure ﹥ soil thickness ﹥ altitude ﹥ canopy species composition ﹥ slope position ﹥ slope aspect. The habitat quality for Taxus wallichiana var. mairei were divided into 3 categories, and put forward the corresponding management measures according to various cultivation objectives.