关键词: 财富效用, 分配不均, 经济增长, 国民福利

Abstract: Based on the hypothesis of consumption utility and capital utility, the paper testifies the existence of the sole point of equilibrium between consumption and investment, and constructs a resident micro-utility function. It further derives a general gross national utility function combining with Lorenz curve, and exploits it to simulate national utility function in China with the statistical data. Furthermore it calculates the national welfare growth over the years, and analyses the difference and reason between national welfare growth and GNP growth. The result indicates the GNP growth had not brought about corresponding resident welfare growth, it attribute to the uneven distribution of wealth , the decrease of the ratio of consumption to GNP, and the inflation of prices ,etc.

Key words: Utility of Fortune, Distribution Inequality, Economic Growth, National Welfare