Abstract: Taking the Taxus yunnanensis communities in northwest Yunnan Province as test objects and based on the field investigation data at three sites (Lanping, Xianggelila, and Ninglang counties) of northwest Yunnan, this paper analyzed the species composition, species diversity, stem size class, and regeneration features of the T. yunnanensis communities. The dominant species in the T. yunnanensis communities were Yushania niitakayamensis, Tsuga dumosa, T. yunnanensis, Betula albosinensis, and Fargesia yunnanensis. Xianggelila had the higher species richness of family, genus, and shrubs than the other two counties, but no significant differences were observed in the species richness of trees and lianas and the total species richness among the three counties. Lanping and Xianggelila had the higher species richness and abundance at smaller size classes (DBH < 5 cm), while Ninglang had the highest species richness and abundance at the second diameter class (1 cm ≤ DBH < 5 cm) and height class (5 cm ≤H<10 m). The wild T. yunnanensis population had weak regeneration ability through seedling, but had stronger sprouting ability. The ratio of the stems through sprouting to through seedling was 1.314. The major sprouting types at all of the three sites were stem basal sprouting and stem epicormic sprouting. Ninglang had the highest sprouting stems, but all the three sites had no significant differences in the mean diameter and height of sprouting stems.