Abstract: With the growth accounting framework,this paper,categorizing industrial digitization into digital integration effects and digital penetration effects,measures the scale of industrial digitization and analyzes its structural characteristics at national and industrial levels from 2000 to 2023 in China.The findings reveal that the scale of industrial digitization in China has reached 141401.113 billion yuan until 2023,with an average annual growth rate of 22.347%.This scale constitutes over half of the total digital economy and accounts for 11.872% of GDP.The scale of digital integration is greater than that of digital penetration,and the scale of industrial digitization shows a characteristic of “tertiary industry > secondary industry > primary industry”.Industry-specific results indicate that the momentum for digital transformation is better in sectors such as manufacturing,finance intermediation and construction which have experienced rapid growth in their digitalization scale.Conversely,industries like management of water conservancy,environment and public facilities,real estate,culture,sports and entertainment have progressed slowly in terms of digitalization.Regarding disparities in digitalization,the differences in industrial digitalization across China have been decreasing annually.The disparities within the secondary industry have diminished year by year,while those within the tertiary industry have shown an “S” shaped trend,initially rising and then stabilizing.This article enhances the understanding of the scale and trends of industrial digitalization development in China and provides data support for formulating and adjusting policies related to the structure of industrial digitalization,promoting the coordinated development of digital industrialization and industrial digitalization.

Key words: industrial digitalization, the system of national accounts, growth accounting framework, scale measurement, structural analysis