The integration of the Yangtze River Delta has been promoted for nearly 40 years. Although breakthroughs have been made in many aspects, there are still problems in industrial integration and market integration: First, the intra regional industrial isomorphism caused by the internal market segmentation in the Yangtze River Delta is obvious, and the integration degree of manufacturing and service industries in the region is relatively low; Second, the industrial integration between the Yangtze River Delta and other surrounding areas is weak.
Firstly, this paper uses China's Interregional input-output table to analyze the regional source composition of manufacturing service factor input in the Yangtze River Delta. Then, the service industry sensitivity coefficient is used to measure the spillover effect of the service industry output of the Yangtze River Delta on the manufacturing industry inside and outside the region. Finally, this paper discusses the problems of industrial integration and market integration in the Yangtze River Delta from two levels, and then puts forward corresponding countermeasures and suggestions for the development of high-quality integration in the Yangtze River Delta.
