选取2011~2022年中国省域面板数据，基于迭代创新视角探究数字经济对制造业全球价值链升级的影响及作用机制。研究发现，数字经济既可直接驱动，也可通过迭代创新间接驱动制造业全球价值链升级；由实质性创新能力和纯技术效率提升产生的核心价值创造及倍增效应驱动效果更强。进一步研究发现，数字经济的正向驱动作用存在迭代创新的门槛效应，随综合创新能力、策略性创新能力提升呈倒S形变化，随实质性创新能力、综合创新效率、纯技术效率和规模效率提升呈边际效用减弱趋势。

Based on the perspective of iterative innovation and using panel data from China’s provinces from 2011 to 2022, this paper explores the driving mechanism of the digital economy on the upgrading of the manufacturing global value chains. The results show that the digital economy not only directly promotes the upgrading, but also indirectly promotes the upgrading via iterative innovation. The core value creation and multiplier effects driven by substantive innovation capability and pure technical efficiency improvements are more pronounced. Further research finds that the positive driving role of the digital economy has threshold effects of iterative innovation. It shows an inverted S-shaped change with increases in synthetical innovation capability and strategic innovation capability, and a marginal utility weakening trend with the improvement of substantive innovation capability, synthetical innovation efficiency, pure technical efficiency, and marginal efficiency.