Abstract: Investigation and statistical analysis were conducted on 15 plots (25m×25m) of Picea schrenkiana, which were arranged on Tianshan Mountains. We studied their age structures and static life tables. The population dynamics were predicted using time sequence model. The analysis of age structure of P. schrenkiana populations showed that all populations were fluctuated in upside down “J” shapes, with most individuals (82.70%) concentrated in the 0—40 year age class. Young individuals were dramatically abundant. By contrast, there were few middle and old individuals. The analysis of life table, the curves of lose rate, survival rate, mortality rate and survival function of the population showed that the population had a peak of mortality at Ⅱ age class, and survival curve of the population was between DeeveyⅡand DeeveyⅢ. The functions used in static life table could explain the structure and dynamic of P. schrenkiana population well. Time sequence models predicted that young individuals would be relative rich, and population structure would be stable after 20,40,60,80,100,140 years in the future.