| In recent years,the rapid development of digital economy has driven a series of changes in urban governance.During the visit to Hangzhou in 2020,President Xi Jinping pointed out that "Making cities smarter and smarter is the only way to promote the modernization of urban governance system and capacity,and the prospect is bright." It has injected strong confidence into the construction of smart cities around the country.The CPC Central Committee’s proposals for formulating the 14 th Five-Year Plan(2021-2025)for National Economic and Social Development and the Long-Range Objectives Through the Year 2035 were adopted at the fifth plenary session of the 19 th CPC Central Committee,"Digital development,Building a digital China" as one of the goals.The construction of smart city has become an important support for digital development and an important means for the development and transformation of various industries.At the same time,with the continuous improvement of social productivity and the development of social economy,tourism has become an increasingly important part of the national economy.As people’s income level increases,their spiritual and other needs will naturally increase accordingly,thus promoting the rapid development of tourism which mainly meets people’s spiritual and pleasure needs.At the same time,the pace of urbanization,increased investment in infrastructure construction,improved transportation convenience,improved education level,etc.,have driven the development of tourism.Among them,as the advanced stage of urbanization construction,whether the Internet of Things,big data,digital construction and so on can significantly promote the development of tourism,and what are the intermediate paths of smart city construction affecting the development of tourism economy are constantly worth thinking about.In this paper,based on China’s 254 prefecture level panel data from 2009 to 2019,using multiple phase double difference model tested the wisdom city construction impact on development of tourism economy,and three kinds of different regional heterogeneity the division standard of inspection,is then used to replace explained variable,shrink tail treatment and falsified robustness three kinds of methods for the empirical test.Furthermore,the mediation effect model is used to test the influence mechanism of smart city construction on tourism economy.The mediation indicators are empirically tested by environmental pollution degree,transportation convenience and innovation development level.Research shows that: the first,wisdom can significantly promote the growth of the tourism economy,urban construction influence coefficient of 42.110 and a significant under 1% level,from the point of control variables,the improvement of the development of the third industry,reception service play a positive role.Secondly,the impact of smart city construction on tourism economy is significantly different due to the geographical location,administrative level and comprehensive economic zone of cities.Specifically,the promotion effect of smart city construction on tourism economy in eastern coastal agglomerations is significantly higher than that in central and western agglomerations.Smart city construction of provincial capital cities,sub-provincial cities and larger cities can bring significant improvement to tourism economy,and general cities also show great potential.Except for the northeast comprehensive economic zone and the middle reaches of the Yangtze River economic zone,the construction of smart city can bring significant improvement to the development of tourism economy.Thirdly,the mechanism test shows that smart city construction can promote tourism economic growth by improving transportation convenience,mainly including improving road infrastructure construction,controlling private car ownership of ten thousand people and improving bus management.From the perspective of environment,smart city construction improves the local environment by strengthening pollutant emission detection,thus promoting the development of tourism economy.From the perspective of innovation,smart city construction can promote the growth of tourism economy by improving the level of urban innovation.Finally,policy recommendations are given. |