Based on the establishment of a three - sector economic growth model from the two mainstream model- Lucas model and Romer model
the contribution of service capital and human capital to Chinese economic growth was analyzed with the data of 1978 -2005. It was proved that both human capital (output elasticity were 0. 328 and 0. 315 ) and service capital (output elasticity was 0. 378 ) made the notable contribution to Chinese economic growth.