Abstract: Under the background of anti-globalization, to promote the in-depth development of domestic production division based on the domestic market is an inevitable choice for China’s economy to overcome difficulties and achieve high-quality development. On the basis ofthe data of China multi-regional input-output table, this paper studies the inter-provincial industrial linkage from the perspective of manufacturing digitalization. The research finds that: firstly, manufacturing digitalization has significantly improved the inter-provincial industrial linkage, and a series of robustness tests have proven that this conclusion is robust and effective; secondly, manufacturing digitalization promotes inter-provincial industrial linkage mainly through the two paths of reducing the cost of inter-provincial intermediate trade and increasing the complexity of inter-provincial transfer technology; thirdly, from the perspective of intensive margin and extensive margin, manufacturing digitalization not only strengthens the intensive margin of inter-provincial industrial linkage, but also expands the extensive margin of inter-provincial industrial linkage, especially for the transregional extensive margin; from the perspective of regional strategy, manufacturing digitalization in the eastern regiondoes not have a significant industrial linkage effect on the central and western regions, but manufacturing digitalization in the central and western regions can promote their industrial linkage to the eastern region. According to the research conclusion, it is necessary to fully consider the inherent logic of industrial linkage in various regions, reasonably carry out the digital layout of the manufacturing industry, strengthen the construction of digital infrastructure in the central and western regions, and build an open, inclusive and high-quality digital system of the manufacturing industry, so as to drive the coordinated development of various industries and regionsand promote the benign operation of domestic circulation.

Key words: manufacturing digitalization, inter-provincial industrial linkage, domestic circulation, division of production