Due to propitious nature in weather and climate conditions, Xuan Son has a rich develop vegetational cover in species component. In plant diversity investigation, the author got the result that, there were 175 species, 152 genera, 83 families belonging to 4 plant phyla including Lycopodiophyta, Equisetophyta, Polypodiophyta, Magnofiophyta. The distribution of species component was so different. In detail, natural forest had 100 species, 95 genera, 62 families
Bush had 95 species, 88 genera, 49 families. Acacia forest, with human actions, had only 35 species, 31 genera, 21 families. Plant diversity there was expressed in taxon number and distribution. By the result achieved, we classified use of plants in different groups such as group plants for wood, for medicine, for food and for bonsai.