Abstract:In order to understand the structure of the population and analyze its current survival situation, we conducted this investigation in the field survey data with a total area of 5.25 hm2 in the east end of Tianshan wild fruit forest in Yili of Crataegus songarica K.Koch populations, and static the life table of population by smoothing out technique, drawing the survival curve, mortality and disappearance rate curve parameters, and the survival analysis of 4 survival functions, using the population dynamic quantization and time series prediction analysis of population dynamics. The results showed that: (1) in the east end of Tianshan wild fruit forest, the middle and old age individuals in C.songarica population were less, namely the class Ⅰ of individuals accounted for 65.5% and the class Ⅱ droped quickly to 6.5%. Therefore, the population structure belongs to the growth type and the survival curve of C.songarica populations tended to be DeeveyⅡ type in the research area; (2)The changes in the mortality and disappearance rate curves are basically the same in the research area, with a total of 4 death peaks at the class Ⅰ, class Ⅵ, class Ⅸ and class Ⅻ, respectively. And the highest peak occurred at the class Ⅰ, being 89.9%; (3)The results of the 4 survival function curves showed that the population of C. songarica had the characteristics of early decline, mediumterm stability, post recession early, and the time series analysis showed that the old class population would increase in the future. Research shows that the growth of C. songarica urgently needed to supplement seedlings or young individuals and to prohibit felling adult individuals so as to provide guarantee for the conservation and recovery of C. songarica population.