In order to study the dynamics of natural Sabina vulgaris population, the quadrat method was used in Tuke protective area in Mu Us sandy land. Individual ages were determined using WinDENDROTM tree-ring analysis system. Time-specific life table were made by accounting the investigated data with smoothing technique and according as the theory of life table and survival analysis. The curves of mortality rate, vanish rate, life expectancy, survival and survival function of the S. vulgaris were made for analysis based on time-specific life table. The results showed that: there existed two peaks of mortality rate in the lifespan, one was in Ⅰ age class which belongs to young trees, mortality rate reach to 94%, and the other started at Ⅵ age class, mortality rate between 27% and 47%. Vanish rate had the similar fluctuation as the mortality rate. The life expectancy value was 0.82 year in Ⅰ age class, the value reach to 4.67 year in Ⅱ age class which was the maximal value in the lifespan, this indicated that S. vulgaris population had the most active physiological movement in this stage, then the value declined with the increased age classes, at last it became zero. The survival curve of S. vulgaris population conformed to the type of DeeveyⅢ verified the relativity by a index function and a power function. This means S. vulgaris population should be an increscent population, and high mortality rate of S. vulgaris population appeared in young tree stage, then it was low and keeping in a steady level. The survival rate monotony downtrend and the cumulative mortality rate monotony rise. The death density function had the opposite exhibition compared with the life expectancy. The hazard rate had the same variation trend as the mortality rate. The four survival functions used in time-specific life table could well explain the dynamics of S. vulgaris population, the theory of survival analysis and life table were combined could reflect the survival conditions of S. vulgaris population more truly.