Different climat in mountainous regions caused different bamboo growth in different elevation and site. Investigation on difference of bamboo (Phyllostachys pubescens) growth in different elevation and site in Wuyi mountainous regions of Fujian province, studies on effect of climat factor on bamboo growth showed that time of effective temperature period (days of annual mean day temperature at 15—25℃) and ventilation in bamboo forest had evident effect on bamboo growth.