二元经济理论是由美国经济学家汉森提出来的,指在资本主义制度下私人经济和国有经济并存的现象。后来,这一理论被广泛引用,指国民经济结构中发达部分与不发达部分并存的现象。诸如发达地区和落后地区并存;发达部门与落后部门并存;先进的大型企业与落后的中小型企业并存等。本文所说的二元经济是指我国发达的东部地区与落后的西部地区之间在经济发展上的严重失衡现象。二元经济这一说法的依据有两个方面:一是我国东西部地区之间的差距极大,以1999年国内生产总值计算东西部地区之比4.2比1,这一比率远高于世界上大多数国家最高地区与最低地区的国内 The theory of dual economy was put forward by Hansen, a U.S. economist, referring to the coexistence of the private economy and the state-owned economy under the capitalist system. Later, this theory was widely quoted as referring to the coexistence of developed and underdeveloped parts of the national economic structure. Such as the coexistence of the developed areas and the backward areas; the coexistence of the developed departments and the backward departments; the coexistence of advanced large-scale enterprises and the backward small and medium-sized enterprises. The dual economy mentioned in this article refers to the serious imbalance in economic development between the developed eastern and underdeveloped western regions of our country. The theory of dual economy is based on two aspects: First, the disparity between the eastern and western regions of our country is extremely large. By calculating the ratio of eastern and western regions to the ratio of 4.2 to 1 in 1999, this ratio is much higher than that in the world Most of the country on the highest region and the lowest region of the country