以2011～2023年中国上市企业面板数据为研究对象，实证检验数字技术创新及其溢出对企业新质生产力不同发展阶段的影响及其内在机制。研究发现，数字技术创新及其溢出效应均显著促进企业新质生产力。机制分析发现，数字技术创新通过强化创新吸收、重组生产要素、促进绿色发展推动企业新质生产力短期跃迁，其溢出效应通过数据要素规模效应、数据权利乘数效应支撑企业新质生产力长期增长。协同作用分析表明，技术溢出正向调节数字技术创新对企业新质生产力的激励效果，且该调节作用在研发联盟企业和高用户互动企业、低数据垄断行业和数字技术应用行业、公共数据开放地区和强制度创新地区的样本中更显著。情境分析揭示，企业可根据创新任务情境，差异化选择“政市企协作”或“供需交互”模式实现新质生产力跃升。

Using panel data of Chinese listed firms from 2011 to 2023, this study examines the effects of digital technology innovation and its spillovers on enterprise new quality productivity and the underlying mechanisms. The findings reveal that both digital technology innovation and its spillovers significantly increase enterprise new quality productivity. Mechanism tests show digital technology innovation drives short-term leaps by enhancing absorptive capacity, reconfiguring factors of production and promoting green development, while technology spillover sustains long-term growth via data element scale and data right multiplier. Technology spillover positively moderates the incentive effect of digital technology innovation, especially for R&D-alliance and high-user-interaction firms, low-data-monopoly and digital-tech sectors, and open-data or strong-institution regions.