Abstract: The paper puts forward a mathematically accurate approach to analyze the factors of economic growth. According to this approach, economic growth can be separated into five parts, they are capital, human capital, economy of scale, resources distribution and knowledge progress. The authors believe that the approach presented in this paper is a modelization of Edward F. Denison’s economic growth analysis. In this paper the authors make quantitative analysis on China’s economic growth and compare the results with those of other authors include Denison.