海南大学学报(社会科学版)

基于30个省份的数字贸易与经济增长的面板数据，采用双向固定效应模型和区域异质性检验，深入探究了数字贸易对经济高质量增长的影响。研究发现：数字贸易水平对经济高质量增长具有显著的正向影响，互联网普及率在这一过程中起到了关键调节作用，它不仅为数字贸易提供了基础设施和市场空间，还推动了数字贸易的创新和发展，进而促进了经济的高质量增长；异质性分析表明，随着互联网普及率的提高，由于西中东三个地区经济增长水平的差异，数字贸易对经济高质量增长的边际效应由强变弱；进一步研究发现：当经济高质量增长指标达到一定水平后，数字贸易对经济高质量增长的影响会降低。

Based on the panel data of digital trade and economic growth from 30 provinces, this study employs a two-way fixed effects model and regional heterogeneity tests to deeply explore the impact of digital trade on high-quality economic growth. The findings reveal that the level of digital trade has a significant positive effect on high-quality economic growth, with internet penetration playing a crucial moderating role in this process. It not only provides the infrastructure and market space for digital trade but also promotes innovation and development in digital trade, thereby fostering high-quality economic growth. The heterogeneity analysis indicates that as internet penetration increases, the marginal effect of digital trade on high-quality economic growth weakens from the western region to the central till the eastern due to the differences in economic growth levels among these areas. Further research shows that when the indicator for high-quality economic growth reaches a certain level, the impact of digital trade on high-quality economic growth diminishes.