摘 要

城市是人们生活的载体，智慧城市是利用先进信息技术手段，将信息化融入到城市建设中，解决了现代社会中的众多城市问题，能够使城市资源得到充分利用，人民生活更加便利，实现智慧融合和创新引领，我国得智慧城市规模不断扩大，在此过程中推动了高新技术产业发展，带来新一轮的产业转型，在过去的智慧城市研究中多是理论研究，缺乏通过实际数据来分析智慧城市建设对经济生活带来影响的文章。

本文使用面板数据利用多期双重差分法，考察了智慧城市建设对产业结构三方面的影响，运用倾向得分匹配的双重差分法和证伪检验，验证了模型的稳健性，并且采用中介效应的检验方法探寻政策的运行机制。研究发现：智慧城市建设能够促进产业结构合理化、高度化水平和服务业生产化水平提升；智慧城市建设通过行业创新、科技水平、互联网发展、居民消费四个效应促进产业结构升级；不同地区的智慧城市建设对产业结构三个方面的影响存在差异性，地区划分为东部、中部和西部，其中西部地区的影响更为显著；不同城市规模的智慧城市建设对产业结构带来不同的影响，城市规模划分为大城市、特大城市和超大城市，结果表明大城市促进产业结构发展的效果最为明显；智慧城市的综合水平越高对产业结构合理化和高度化的影响越明显。创新与价值：考虑到智慧城市试点实施时间不同，采用多期双重差分法建立模型，使数据利用更充分，模型更贴合实际；使用智慧城市得分的数据验证了智慧化程度不同的城市对产业结构升级促进作用的差异性。本文有利于国家进一步规划新型智慧城市建设，应继续扩大智慧城市规模，将建设重点倾向于西部地区城市和城市规模为大城市的区域，同时提前做好互联网等基础设施的建设。

关键词： 智慧城市 产业结构 多期双重差分 中介效应

ABSTRACT

City is the carrier of people's life,smart city is to use advanced information technology means to integrate information into urban construction, solve many urban problems in modern society, make full use of urban resources, make people's life more convenient, realize wisdom fusion and innovation guide. In the process of promoting the development of high-tech industryand bringing about a new round of industrial transformation,most of the research on smart cities in the past is theoretical research. Lack of practical data to analyze the impact of smart city construction on economic life.

This paper uses panel data to investigate the influence of smart city construction on three aspects of industrial structure. By using the differences-in-differences method of tendency score matching andfalsification test, the robustness of the model is verified,and the mesomeric effect of test method is used to explore the operation mechanism of the policy. It is found that the construction of smart city can promote the rationalization of industrial structure, and production of service industry. The construction of smart city improves the upgrading of industrial structure through four effects: industry innovation, science and technology level, Internet development and resident consumption. There are differences in the influence of smart city construction on industrial structure in different regions, which are divided into eastern,central and western regions, among which the influence of western region is more significant. The construction of smart city with different city scale has different influence on industrial structure, and the city scale is divided into big city, megacities and megacities. The results show that big cities have the most obvious effect on promoting the development of industrial structure. The higher the comprehensive level of smart city,the more obvious the influence on the rationalization and height of industrial structure. Innovation and value: considering the different implementation time of smart city pilot,the multiphase differences-in-differences method is used to build the model,which makes the data use more fully and the model is more suitable for practice; the data of smart city score is used to verify the difference of the promotion function of smart city to industrial structure upgrading. This article is helpful