Abstract:    Polarization is the characteristic of digital innovation of enterprises in China, and it is difficult for tail enterprises to break through digital technology due to the impact of digital divide; can the hand of digital public service be used to promote digital innovation from polarization to inclusiveness? This paper characterized the public policies on smart supply chain with pilot innovation and application of urban supply chains, and explored the effect and mechanism of the digital public service of supply chains on enterprise digital innovation based on the data of A-share listed companies from 2010 to 2023. The study found that the construction of smart supply chain effectively promotes enterprises′ digital innovation, in which the tail enterprises with traditional technology, low efficiency and overcapacity benefit the most, indicating that the construction of smart supply chain effectively bridges enterprises′ digital divide and helps to enhance the inclusiveness of digital innovation. In terms of the mechanism of action, information connectivity and capital financing are important mechanisms for smart supply chain construction to promote enterprise digital innovation, and they are most significant for the tail enterprises. The findings of the study will provide some theoretical guidance and practical insights for improving digital public service policies of supply chains and promoting the inclusiveness of digital innovation.

Key words:  digital innovation, smart supply chain, inclusiveness, innovation and application of supply chain, digital divide