Abstract: The wild flower biodiversity of NW Yunnan was studied based on our field investigation results combined with analyzing of literature data. The research results indicated that Northwest Yunnan is rich in wild flower resources. The total numbers of wild flower in NW Yunnan are 38 families, 324 genera and 2206 species with 1463 species of herbaceous plants, 743 species of woody plants, 751 endemic species and 35 species of rare and endangered species. The distribution patterns, ornamental value, types of flower colors, flowering time, endemic phenomenon and threatened status of the wild flower in NW Yun-nan were analyzed. The results indicated that the richness of the wild flower species in NW Yunnan are Li-jiang, Zhongdian, Gongshan, Deqin, Weixi, Heqing, Fugong, Exyuan, Dali and loping succes-sively. From the vertical distribution point of view, the main distribution areas of wild flowers in NW Yun-nan are concentrated in the areas at the altitude of 2400-3 000m and the areas above 3 500m.

Key words: Wild fower