Abstract: Building internal platforms has become an important approach for supplier enterprises to achieve digital transformation. However, the process of integrating external digital capabilities with internal business capabilities to form digital platform capabilities has not been fully revealed. By analyzing the longitudinal case studies of five leading supplier enterprises that have built internal platforms, this study reveals the construction path and formation mechanism of digital platform capabilities. The research findings are as follows: (1) Digital platform capabilities followed the construction path of "platform foundational capability - platform application capability - platform composite capability," demonstrating an advancing characteristic of "horizontal expansion - vertical enhancement"; (2) and form corresponding capabilities at each stage through three integration mechanisms of "transplantation - debugging - embedding"; (3) with the mechanism of "spatial-cross domain-structural" integration, the digital and business capabilities promote the formation and progression of the digital platform capabilities. The conclusions open the "black box" of digital platform capability formation, enrich and expand the relevant literature on capability construction and integration in platform contexts, and have guiding significance for manufacturing enterprises to accelerate digital transformation through building internal platforms.

摘要： 构建内部平台已经成为供应商企业实现数字化转型的重要途径，但如何将外部数字能力与内部业务能力融合以形成数字平台能力的过程暂付阙如。通过对五家领先构建内部平台的供应商企业进行纵贯式案例分析，探究了数字平台能力的构建路径与形成机理。研究发现：（1）数字平台能力构建遵循“平台基础能力—平台应用能力—平台复合能力”的演变路径，呈现出“横向拓展—垂直提升”的进阶特点；（2）“数字—业务”能力通过“移植—调试—嵌构”三种策略逐步实现了“空间—跨域—结构”的融合，以此推动数字平台能力的最终形成。研究结论打开了制造企业数字平台能力的“黑箱”，丰富并拓展了数字平台能力构建及能力融合策略的相关文献，对制造企业构建内部平台加速数字化转型具有指导意义。