摘要
Population aging,as one of the major characteristics of population development in the 21st century.attracts the attenticn of the world.The United N ations reminded of its member countries.at the 35 th Conference of Social Devel opment Conmittee onvened 1n11997.that population aging was a major challenge to any society in the coming century,and emphasized the importance for every country to giving priority to this issue.
