Abstract:Successive surveys were made in bamboo (Phyllostachys pubescens Mazel ex H.de Lehaie) groves in Dagangshan region,Jiangxi Province from March 1987 to Sept.1989 for analyzing their structure characteristics which are presented in this paper.The result shows that the unit weight of culm changes along with the age of culm.Its change rules have shown the unique style of bamboo growth and differentiation.The number of bamboos of various ages trends to be approximately the same with the increase of density while diameter follows weibull distribution,but it will be transformed to normal distribution when its stand productivity and density rise.