Professor Xi Weiqun of Jiangxi University of Finance and Economics delivered a keynote speech entitled Tax Contribution and Policy Support of Digital Industrialization in China. She came up with a question: In the in-depth development of digital industrialization at the same time, the tax contribution is also a corresponding increase ? In order to answer this question, she analyzed the tax contribution of China 's digital industrialization development by calculating the relevant indicators. Then, taking 29 provinces in China as the research object, the scale of digital industrialization in 29 provinces in China from 2012 to 2019 is measured. On this basis, an econometric model is established to study the role of digital industrialization development in promoting tax growth, trying to tap the space for tax growth and put forward relevant policy recommendations.

She pointed out that digital industrialization achieves the organic combination of economies of scale and economies of scope. Further, there is a certain income effect between the development of digital industrialization and its tax revenue growth, that is, the development of digital industrialization brings about an increase in tax sources, which promotes the increase of tax revenue of digital industrialization to a certain extent. Although China 's digital industrialization tax contribution is still relatively small, but the digital industrialization tax revenue has been growing with economic development.Based on this, she proposed the following hypothesis: The in-depth development of digital industrialization can promote the growth of tax revenue and has a significant traction effect on tax contribution. By empirical analysis, she concluded some interesting findings. First, the tax revenue of digital industrialization in China is increasing year by year, but the tax elasticity of digital industrialization in most years is less than 1, the overall level of tax burden is low, and the tax contribution is insufficient. Second, the tax contribution of digital industrialization presents certain regional and industrial differences. The tax contribution rate of northeast and central regions is small ; the tax contribution rate of telecommunication radio and television and satellite transmission service industry, Internet and related services is low. Although the tax contribution of computer communication and other electronic equipment manufacturing industry is relatively stable, the tax elasticity is negative in most years. Third, the development of digital industrialization can significantly promote tax growth and has a traction effect on tax contribution. For every 1 % increase in the scale of digital industrialization, the tax revenue of digital industrialization will increase by about 0.095 %. Last but not least, the focus of improving the tax contribution of digital industrialization is different in regions, industries and taxes.

       Based on these findings, professor Xi Weiqun proposed several policy recommendations. First, increase tax support for telecommunications,radio,television and satellite transmission services, the Internet and related services, and increase their tax contributions. Second, increase tax support, encourage the development of digital industrialization in the northeast, central and western regions, and narrow the digital divide. Third, improve the preferential policies of corporate income tax and improve the traction effect of digital industrialization development on income tax. Last but not least, accelerate the reform of tax collection and management, realize digital taxation, and reduce tax loss.

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