数字经济是实现区域一体化发展的重要抓手和战略发展目标，需要深入研究数字经济对区域一体化的影响机制。本文基于2013-2020年长三角城市群26个城市的相关数据，利用面板数据固定效应模型以及中介效应模型，实证检验数字经济对区域一体化的影响，并从要素配置角度入手，深入探究其作用机制。研究发现：（1）从细分的维度看，数字技术的基础设施、推动数字产业的技术创新和数字发展环境对区域一体化有正向推动作用，能够有效推动区域一体化进程；（2）数字经济的资本、技术和人力三种生产要素对区域一体化发展有显著正相关作用，加大对数字生产要素的投入能够显著提升区域一体化发展水平。因此，应不断完善数字基础设施、大力发展数字产业、构建良好数字发展环境，加大对数字相关资本、技术和人才的投入，提升地区数字经济发展水平，促进区域经济一体化发展水平。

Digital economy is an important grasp and strategic development goal to realize the development of regional integration. It is necessary to deeply study the impact mechanism of digital economy on regional integration. Based on the relevant data of 26 cities in the Yangtze River Delta urban agglomeration from 2013 to 2020, this paper uses the panel data fixed effect model and the intermediary effect model to empirically test the impact of digital economy on regional integration, and from the perspective of factor allocation, deeply explores its mechanism. The research finds that: (1) from the perspective of subdivision, the infrastructure of digital technology, the technological innovation of digital industry and the digital development environment have a positive role in promoting regional integration, which can effectively promote the process of regional integration; (2) The three production factors of digital economy, capital, technology and manpower, have a significant positive correlation with the development of regional integration. Increasing the investment in digital production factors can significantly improve the development level of regional integration. Therefore, we should constantly improve the digital infrastructure, vigorously develop the digital industry, build a good digital development environment, increase investment in digital related capital, technology and talents, improve the development level of regional digital economy, and promote the development level of regional economic integration.

F424；F124

国家社科基金一般项目(21BJY152)；江苏省社科基金一般项目(21EYB0029)。