关键词: 部门间生产率差距, 劳动力去工业化, 结构性减速

Abstract: Based on the signs of rapid and premature deindustrialization of China's labor employment structure，this paper studies it from the perspective of intersectoral productivity gap using multisectoral general equilibrium model，numerical simulation and econometric empirical analysis methods and obtains the following conclusions（1） Theoretically，when the growth of labor productivity in service sector is slower than that in industrial sector，the intersectoral productivity gap will increase，and the rate of labor deindustrialization will be fasterMoreover，the existence of intersectoral productivity gap makes labor deindustrialization have a structural deceleration effect on economic growthWith the accelerated improvement of labor productivity in the service sector，the intersectoral productivity gap will be narrowed，so as to slow down the rate of deindustrialization and reduce the pressure of structural decelerationAlthough the improvement of labor productivity in the industrial sector will expand the intersectoral productivity gap and accelerate the deindustrialization of labor force，it will play a role in homogenizing the economic growth rate in the long run（2） Using the econometric empirical analysis of China's provincial level and citylevel panel data from 20012018，it is found that the existence of intersectoral productivity gap leads to the significant effect of labor deindustrialization，but the structural deceleration effect of labor deindustrialization on economic growth is only significant in the sample interval from 2009 to 2018This shows that the slowdown of China's economic growth in recent years is related to the intersectoral productivity gap and labor deindustrialization（3） The experience comparison between successful and failed countries also shows that the improvement and coordination of labor productivity in industrial and service sectors is the key to cross the middleincome trap and achieve sustainable catchup after crossing

Key words: inter-sectoral productivity gap, labor deindustrialization, structural slowdown