【摘要】 信息技术发展是驱动城市数字经济发展和高水平对外开放的基础。基于此，创新性地提出考虑信息摩擦作用的垄断竞争分析框架，并从进口二元边际视角实证检验区域互联网深化对进口增长的作用。研究发现，区域互联网深化能显著促进进口规模扩张，增长来源于进口价格、进口数量与进口种类，主要影响机制为降低信息摩擦。异质性分析表明，低对外贸易开放城市互联网深化显著降低了进口产品数量。进一步讨论发现，区域互联网深化对进口“数量”增长及“质量”增长均有促进作用。更多还原

【Abstract】 The development of information technology is the foundation for driving the digital economy and high-level opening up of cities. Based on this, the paper proposed an innovative competition analysis framework, taking into account the role of information frictions. This framework empirically tested the impact of regional internet deepening on import growth from the perspective of import binary margins. The study found that regional internet deepening significantly promoted the expansion of import volumes, with the growth driven by import prices, quantities, and varieties. The primary mechanism of this impact was the reduction of information frictions. Heterogeneity analysis showed that, internet deepening in cities with low levels of foreign trade openness significantly reduced the number of imported products. Further discussion revealed that regional internet deepening had a promoting effect on both the“quantity”and“quality”of imports.更多还原