This paper studied on the population structure and spatial pattern of Reaumuria soongorica in Longshou Mountain of Zhangye City by analyzing the population changes with age structure,survival curve and static life table of Reaumuria soongorica,assessed the spatial pattern by diffusion coefficiency C,Kvalue of negative bidirectional function,mean congestion degree m^*,clumping index I,Cassie index CA,conglomeration index m^*/m,and analyzed the population pattern scale using two-way track variance method.The results indicated that the Reaumuria soongorica population was in a natural succession with all-age plant evenly distributed.The age structure was close to that of growing phase with the crown diameter of middleage plant at 10cm