Abstract: Through the typical sample-plot survey of artificial Phyllostachys heterocycla var. pubescens stands in Jiangan County, the density distributions of their Age, DBH and HUC were simulated by using the Weibull distribution function. The results showed that (1) the bamboo number distribution of the stands was uniform, and the structure was quite reasonable. The number of bamboos at the first year was 598 individuals per hectare,which accounted for 16.5% of the total bamboos; (2) The age distribution of the stands complied with three-parameter Weibull distribution function,the fitting determination coefficient of all the plots was R²=0.99812, the error of each age group was within 3%; (3) The DBH and HUC distributions of the stands complied with two-parameter Weibull distribution function, the entire plot fitting determination coefficients were R²=0.99951 and 0.99819 respectively. Because of disturbances by artificially managed activities, the fitting errors found in the first four groups of the DBH distribution and the first three groups of the HUC distribution were larger,and the maximum values were 31.69% and-30.02% respectively, and the fitting errors in the rest groups were less than 3%; (4) The age-DBH and age-HUC distribution of the stands had similar structural characteristics, namely, DBH distribution of mature age groups was a normal distribution,and HUC distribution showed a non-complete normal distribution which was left-truncated, while the distribution of rest age groups didn't show obvious distribution characteristics, which was related to the artificial managed activities and their level.