Abstract: In order to study the mechanism of sustainable economic growth， a production function integrating capital， human capital， resource and environment is built based on the theory of endogenous growth. Then， two sustainable economic growth models were created and the growth limit was determined. The complicated and close relationship between economic variables of sustainable growth and the resource and environment were analyzed， among which the rich economic connotation was discussed. The researches revealed the general rule how variables like resource and environment affect the economic growth. At last， the mechanism of sustainable economic growth was revealed penetratingly， which would benefit the comprehensive description of the economic growth. The results can be used in analyzing and predicting the important economic phenomena， and in guiding sustainable development of society and economy.