In a nation, the decisions of welfare policies supplier are tend to be made upon the interactions between multiple variables as well as socio-economic features. Central and local governments or public and private sectors who implement social welfare policies should enhance their efficiency on the ground of the functional traits of them and scientific policy analysis considering the advantages & disadvantages. To ensure the livelihood of the people, welfare policies supplier should contribute to improve the quality of the people's living through enlargement of universal welfare in the macroscopic viewpoint considering rapid transition of
population structure, deterioration of public finance and polarization deepened by rich-poor gap.