The core of the problem of aging is old-age security issues. Given the rate of aging, in order to measure how much the national economy should be assigned to the Chinese elderly; the paper proposes a reasonable pension level coefficient concept, which derived from the Solow model after adding the rate of aging to it, and estimates pension expenditure in proportion of GDP, compared it to the reasonable pension level coefficient. Through the study we found that from 2000 to 2010, our reasonable pension level coefficient is decreasing, well below the level of the United States and Japan and other developed countries; the proportion of the Chinese pension expenditures in GDP is increasing, but more slowly than the rate of aging, thus the actual level of old-age security is reducing. In addition, the ratio of the average pension and the average wage declines, while the ratio of the numbers of retirees and workers is rising rapidly after making factors decomposition on the radio of pension expenditures and gross domestic product.
基金项目：
作者简介：
李绍泰(1988-),浙江台州人,暨南大学经济学院硕士研究生。研究方向:人口统计、抽样调查。
参考文献：
[1] 穆怀中. 社会保障适度水平研究[J]. 经济研究, 1997, (2).
[2] 姜向群. 人口老龄化对退休金负担影响的量化研究[J]. 人口研究, 2006, (3).
[3] 李敏, 张成. 中国人口老龄化与养老金支出的量化分析[J]. 社会保障研究, 2010, (1).
[4] 于学军. 中国人口老化的经济学研究[M]. 北京: 中国人口出版社, 1995.
[5] 李建民. 老年人消费需求影响因素分析及我国老年人消费需求增长预测[J]. 人口与经济, 2001, (5).
[6] Stolnitz, G. J. Demographic Cause and Economic Consequences of Population Aging [R]. UN Economic Commission of Europe and UN Population Fund, New York, 1992.
[7] 同[6] .
[8] 王金营, 付秀彬. 考虑人口年龄结构变动的中国消费函数计量分析—兼论中国人口老龄化对消费的影响[J]. 人口研究, 2006, (1).
[9] 同[1] .
[10] 同[2] .
