Abstract: In order to reveal the characteristics of woody plant community in Guangxi, Cenwanglaoshan 30 20 m×30 m sample plots covering most areas were set up in Cenwanglaoshan Nature Reserve. The species composition, biodiversity, size structure and growth status of the community were analyzed. The results show as follows. (1) There are altogether 51 families, 105 genera and 205 species of woody plants in this region, and there are differences in the dominant tree species in different areas. The main dominant tree species are Liquidambar formosana, Engelhardia roxburghiana, Quercus variabilis and Cunninghamia lanceolata, pearl flower (Lyonia ovalifolia), etc., (2) The diameter class structure of the community is mainly composed of middle and small class (Ⅰ, Ⅱ) individuals, and the community has strong development potential. (3) The growth status of woody plants is dominated by excellent and good grades. The results provide a scientific basis for biodiversity conservation and ecological restoration in Cenwanglaoshan and similar karst areas.