Abstract: The information revolution is increasingly impacting the world economy The digitalization of government departments has become a key area of competition for national soft power In recent years，increasing the technological content of export products and optimizing the structure of export trade have become important strategic choices for China to build a trading powerhouse At this stage，promoting the digital transformation of government departments and accelerating the construction of digital governments have gradually become the key driving force for China's open economy to develop to a higher level in the digital economy era
This paper uses big data and machine learning methods to measure the digital government construction index of various prefecturelevel cities in China，and utilizes the Chinese Customs Database，BACI Database，and WDI Database to calculate the export technological sophistication of each city We also empirically examine the impact of digital government construction on export structure upgrading
The empirical results show that digital government construction can promote the upgrading of export structure Series of causal inference and robustness tests have verified the reliability of this conclusion Heterogeneity analysis shows that digital government construction can overcome the “digital divide” to promote the upgrading of exports，and has a greater impact on the central regions，western regions and regions with weak demographic dividends The mechanism analysis demonstrates that digital government construction facilitates the upgrading of export structure through the effects of innovationdriven growth，expansion of intermediate variety imports，and the establishment of a unified national market Furthermore，digital government construction can promote export structure upgrading by promoting resource reallocation among cities and facilitating product entry or exit Extended analysis reveals that smart city construction can effectively collaborate with digital government to jointly drive Chinas export structure upgrading
The policy implications are as follows：Firstly，it is imperative to further enhance the highquality construction of a digitized government，facilitate the deep integration of an efficient market and a promising government，and drive Chinas export structure upgrade through the digitalization reform of the government Secondly，it is essential to promote the balanced development of digitization in all prefecturelevel cities nationwide，thereby empowering the establishment of a unified national market and leveraging the transformative role of government functions in “digital trade” Thirdly，efforts should be made to enhance the construction of digital infrastructure，gradually eliminate multidimensional “digital divide”，and create favorable conditions for nurturing new advantages in China's export trade during this era characterized by a digital economy

Key words: digital government, government work report, machine learning, export structural upgrading

摘要： 本文利用中国各地级市政府工作报告和机器学习方法测度了数字化政府建设指数，并考察了数字化政府建设对出口结构升级的影响。研究表明，数字化政府建设有利于推动出口结构升级，系列因果推断及稳健性检验均验证了该结论可靠。异质性分析表明，数字化政府建设能够跨越“数字鸿沟”助力出口结构升级，且对中西部地区和人口红利薄弱地区的影响更大。机制分析表明，数字化政府建设通过创新驱动效应、进口中间品种类扩张效应和全国统一大市场效应推动出口结构升级。此外，数字化政府建设能够通过促进资源在城市间再配置及产品新增消亡推动出口结构升级。拓展分析表明，智慧城市建设能够与数字化政府实现有效联动，共同助力中国出口结构升级。

关键词: 数字化政府, 政府工作报告, 机器学习, 出口结构升级