Abstract: By the method of typical community survey plots,studies were made of tree layer species diversity characteristics in the Wawu Mountain of the secondary evergreen broad-leaved forest. The results showed that(1) 17 species belonging to 16 genera and 10 families constituted species of the secondary evergreen broad-leaved forest tree layer in the Wawu Mountain. (2) Dominant species were Castanopsis platyacantha and Schima castanopsis, mainly associated with broad-leaved tree species of Lithocarpus hancei, Acanthopanax evodiaefolius, Mallotus japonicus, Cyclobalanopsis myrsinifolia etc.(3) Species diversity index was between 1.25~2.68, ecological dominance was between 0.17~0.45, and evenness index was between 0.26~0.47. (4) The secondary evergreen broad-leaved forest succession evolved from double excellent community towards diverse excellent community patterns in the Wawu Mountain.