长期以来，由于中国实施城乡分断政策和向工业倾斜的产业政策，造成了农村居民收入与城市居民收入之间的差异，并且这种差异具有刚性，形成了中国居民收入的二重性结构。在过去２０年中，中国城市居民的人均年收入大体上为农村居民的２～３倍。本文依据１９７８年至１９９８年 For a long time, as a result of China’s implementation of the urban-rural break-off policy and the industrial policy of slanting to industry, the difference between income of rural residents and income of urban residents has been caused. And this discrepancy is rigid and forms a dual structure of income of Chinese residents. In the past 20 years, the annual per capita income of urban residents in China has been roughly two to three times that of rural residents. This article is based on 1978 to 1998