Abstract: This paper presents an analysis on the modern flora characteristics based on the structure of the families, genuses and species of seed plants in Leigongshan Nature Reserve. There are 158 families, 562 genuses and 1414 species of seed plants in the Reserve. The flora breeds and preserves many ancient ingredients and is involved in the development process of the East Asian flora and species diversity. The floras have a total of 1004 species, which are mainly warm-temperate species and constitute part of East Asian flora. In the Reserve, there are 14 China endemic genuses, 660 China endemic species, 29 Guizhou endemic species and 25 key state-protected species, all of which have formed the major part of the flora in Leigongshan National Nature Reserve.

Key words: nature reserve, seed plant, flora, Leigongshan