Economic impact assessment of Beijing-Shanghai high-speed railway on small and medium-sized cities along the economic circle of Yangtze river delta

Up to now, domestic and foreign scholars have not reached a consensus on the impact of high-speed railways on regional economic development. Beijing-Shanghai High-speed Railway is a high-speed railway with great influence in China, so this paper selects the small and medium-sized cities along the Beijing-Shanghai High-speed Railway in the Yangtze River Delta Economic Circle as the research object. Through the quantitative analysis of DID model, it is concluded that the economic impact of Beijing-Shanghai High-speed Railway on the small and medium-sized cities along the Yangtze River Delta Economic Circle is not significant.