From the situation and trend of world economic growth, we could see that human capital is playing a key role in the economic growth of a country or a region by taking place of material capital and labor. This paper focused on the relationship between human capital and Hunan economic growth by utilizing modified Cobb-Douglas production function. The results showed that human capital made the greatest contribution to Hunan economic growth besides material capital and labor. It should take some measures, like increasing education input, strengthening the attractive talent mechanism, and so on to ...