The purpose of this research is to examine the role of rural and urban economies in China can be classified as a Nurkse model or a Lewis model. According to the Granger test, income increasing in the rural sector has not preceded at the rising in urban sector in China. But, conversely, income increasing in the urban sector has preceded at the rising in urban sector. This result is the opposite of the experience of Korea. This means that the rural economy`s marginal productivity of labour has yet remained below the level of urban economy in China. So it demands more progressive policies for rising productivity in the rural sector.