摘要：

基于2013—2023年中国30个省份的面板数据，系统考察数字贸易对劳动收入份额的影响及其内在机制。研究发现，数字贸易发展显著提升了劳动收入份额，该结论在一系列稳健性检验中均成立；产业结构升级在数字贸易影响劳动收入份额的过程中发挥显著的中介作用。进一步分析表明，数字贸易对劳动收入份额的影响存在区域异质性，东部地区效应显著；制度环境亦具有重要调节作用，自贸试验区政策显著增强了数字贸易的增收效应。应持续推进数字贸易发展与产业升级，实施区域差异化策略，并推广自贸试验区制度经验，以充分发挥数字贸易在改善收入分配中的积极作用。

Abstract：

Based on the panel data of 30 provinces in China from 2013 to 2023,this paper systematically examines the impact of digital trade on labor income share and its internal mechanism.The study finds that the development of digital trade has significantly increased the share of labor income.This conclusion is established in a series of robustness tests.The upgrading of industrial structure plays a significant intermediary role in the process of digital trade affecting labor income share.Further analysis shows that the impact of digital trade on labor income share has regional heterogeneity,and the effect in the eastern region is significant.The institutional environment also plays an important regulatory role,and the policy of the pilot free trade zone has significantly enhanced the income-increasing effect of digital trade.We should continue to promote the development of digital trade,promote industrial upgrading,implement regional differentiation strategies,and promote the experience of the pilot free trade zone system,so as to give full play to the positive role of digital trade in improving income distribution.