From W.A.Lewis to G.Ranis and J.Fei, the dual economy theory focused on the development in developing countries.They tried their best to find a way to success for developing countries.

• 从刘易斯到拉尼斯、费景汉,二元经济理论探讨了不发达经济向发达经济结构转换的路径,从理论上为发展中国家提供了一条摆脱贫穷、走向繁荣的成功之路。