新创数字赋能企业及其数字创新活动对数实融合实践和发展新质生产力尤为关键，但归咎于新创劣势以及数字创新过程的复杂性，新创数字赋能企业的数字创新结果往往高度不确定。精益创业作为驾驭不确定性的重要战略举措，对优化新创数字赋能企业架构以及改善数字创新绩效具有重要意义。本研究基于“战略-结构-绩效”范式，提出了新创数字赋能企业精益创业、模块化架构（包括模块化产品架构和模块化组织架构）与数字创新绩效间的关系假设。通过对267家新创数字赋能企业的数据进行层次回归和Bootstrap分析，研究发现：（1）精益创业对新创数字赋能企业的数字创新绩效具有显著正向影响；（2）模块化产品和组织架构分别在精益创业与新创数字赋能企业的数字创新绩效之间起到了中介作用；（3）模块化产品和组织架构在精益创业和新创数字赋能企业的数字创新绩效关系中起到了链式中介作用。本研究揭示了精益创业对新创数字赋能企业数字创新绩效的作用机制，不仅扩展了精益创业和数字创新的研究，也为我国数字经济与实体经济的融合实践提供了理论依据和决策借鉴。

New digital empowerment ventures and their digital innovation activities are crucial for the integration of digital and physical realms and the development of new quality productive forces. However，due to the disadvantages of start-ups and the complexity of the digital innovation process，the outcomes of digital innovation in new digital empowerment ventures are often highly uncertain. Lean startup，as a crucial strategic approach to managing uncertainty，plays a significant role in optimizing the structure of new digital-enabled ventures and improving digital innovation performance. Based on the "strategy-structure-performance" paradigm，this study constructed a relational model between lean startup，modular architecture （including modular product architecture and modular organizational architecture），and digital innovation performance of new digital empowerment ventures. By conducting the hierarchical regression and bootstrap analysis of the data collected from 267 new digital empowerment ventures，the study found the following results： （1） Lean startup has a strong positive effect on the digital innovation performance of new digital empowerment ventures；（2） Modular product architecture and modular organizational architecture respectively play a mediating role in the relationship between lean startup and digital innovation performance of new digital empowerment ventures；and （3） Modular product architecture and modular organizational architecture act as a chain mediator between lean startup and digital innovation performance of new digital empowerment ventures. This study has clarified the mechanism by which lean startup influences the digital innovation performance of new digital empowerment ventures，thereby extending the research on lean startup and digital innovation. Additionally，it will provide theoretical basis and decision-making reference for the integration of digital economy and physical economy in China.