消费跨期替代弹性提现代经济增长理论模型中解释消费选择与储蓄内生化的一个重要参数;也是经济增长动态模型实证研究不可或缺的基础数据。本文通过建立自回归分布滞后动态模型,对测算消费跨期替代弹性的K-R模型与AP模型方法进行改进;并利用年序递推方法估算出我国消费边际效用弹性θ及消费跨期替代弹性σ值;由于加大了近期变量值对后期变量值的影响权重,使估算结果具有更高的精确度,同时估算结果具有更强的稳定性。 Consumption intertemporal elasticity of elasticity to mention modern economic growth theory model to explain the choice of consumption and saving endogenous one of the important parameters; but also the empirical model of economic growth dynamic model indispensable basic data. In this paper, we establish a dynamic model of lagged autoregressive distribution to improve the KR model and AP model to estimate the interim substitution elasticity of consumption, and use the annual recursion method to estimate the marginal utility elasticity θ and the inter-consumer elasticity ε . As a result, the impact of the recent variable values ​​on the subsequent variable values ​​is increased, which leads to higher accuracy of the estimation results and more stability of the estimation results.