Abstract: This paper uses the balance panel data of 31 provinces in China from 2001 to 2015, constructs a panel smooth transition regression model and makes an empirical test of the threshold characteristics, dynamic changes and regional differences of China’s economic growth affected by population aging. The results show that the impact of population aging on economic growth presents a non-linear and significant threshold characteristics. Based on the time-series analysis of longitudinal section shows that the positive effect of population aging on economic growth presents the trend of first decreasing and then increasing. Based on the individual analysis from cross-section shows that the impact of population aging on economic growth has significant regional differences. Therefore, it is necessary to correctly understand and comprehensively grasp the threshold effect and the time and space difference of population aging affecting China’s economic growth, strengthen the positive effects of population aging on economic growth and weaken its adverse effects. It has positive and realistic value to the formulation of the countermeasures for the aging of the population and the steady and sustainable growth of the economy.

Key words: Population Aging   PSTR model   Time-Space Characteristics   Economic Growth