【摘要】 随着全球经济一体化和电子商务的迅猛发展，跨境电商已成为中国外贸的重要支柱。长三角地区作为我国跨境电商发展的先领区，其批发零售贸易业市场活力强、潜力大，综试区的设立是否促进了地区批发零售贸易的发展是当下需要深入研究的问题，故以长江三角洲26个城市为研究对象，采用多期DID模型实证检验长三角综试区的设立对批发零售贸易业的影响，并提出对策建议。更多还原

【Abstract】 With the swift advancement of global economic integration and e-commerce, cross-border e-commerce has emerged as a crucial pillar of China’s foreign trade. The Yangtze River Delta region, serving as a forefront zone for cross-border e-commerce development in China, exhibits robust vitality and significant potential within its wholesale and retail trade sector. Whether the establishment of comprehensive test areas has effectively boosted regional wholesale and retail trade requires in-depth investigation. Hence, this study focuses on 26 cities within the Yangtze River Delta, employing a multi-period DID model to empirically examine the influence of these test areas on the wholesale and retail trade industry, and offers strategic recommendations.更多还原