Abstract:Abies yuanbaoshanensis is an endangered evergreen conifer endemic to Guangxi, and listed in the Red Data Book of plant in P.R.C., with less than 900 individuals remaining on earth.5 plots were established in Yuanbaoshan Nature Reserve, and field data were obtained by tallying with contiguous grid quadrate method. The time specific life table, survivorship curve and size structure of Abies yuanbaoshanensis population were analyzed and a spectral analysis of the population dynamic was made in this pape...