In this paper,we emphasize the interactive effect between life expectancy and human capital accumulation,and test the positive feedback oflongevity to educational investment in China.This is very important for understanding the pressure from the aging population and the increase in private educational investment in China.We first show in an extended human capital investment model that life expectancy growth acts as a driving force for educational investment.We then build a difference-in-difference-in-differences empirical framework and use cross-province data to examine the effect in China.We use the matal mortality rate (MMR) to identify the difference in life expectancy between genders,and the illiteracy rate or average years of education by gender for educational investment.The empirical results comply with the theory,in that increases in life expectancy significantly lower illiteracy rates and improve the average schooling years in China.This content of the present paper is closely related to crucial issues like population aging,human capital accumulation and gender discrimination.Policy implications are discussed based on the empirical results.