evel of China's social security. Chinese academics have carried on a lot of studies on Р this area. On the basis of theoretical results that have been achieved, the thesis puts Р forward the concept of the per capita moderate structural level of social security, Р deduces the model of measuring the per capita moderate structural level of social Р security. Then the thesis measures the per capita moderate structural level of social Р security of China in present. At last, the thesis get useful conclusions through the Р analysts between the per capita moderate structural level of social security and the per Р capita practical structural level of social security in China. Р Key words: level of social security; moderate structural level of social security; per Р capita level of social security