Abstract: species diversity of evergreen broadleaved forest in Babaoshan Nature Reserve,Guangdong,was studied by computing the species diversity index, species evennessand ecological dominance of 26 associations.The species diversity index(Shan-non-Wiener Index) ranged from 2.02 to 4.43,species evenness from 0.54 to 0.24and ecological dominance from 0.06 to 0.17.The species diversity index of low montaneevergreen broadleaved forest in this region,which ranged from 3.22 to 4.43,was simi-lar to that of the lower subtropical evergreen broadleaved forest.The relationship be-tween species diversity and the habitat is also analyzed in this paper.