Digital transformation can increase lending by commercial banks, which may have an impact on economic development and technological progress, thus affecting air pollution. However, a limited amount of literature has discussed the impact of the digital transformation of commercial banks (DTCB) on air pollution. Based on city-level data from 2010 to 2020, this study used a spatial Durbin model to explore the spatial effects of DTCB on air pollution. This study shows that DTCB significantly increases air pollution in local and surrounding cities. Heterogeneity analysis shows that DTCB increases local and surrounding city air pollution in non-innovative cities and cities with low digital economy development. However, in innovative cities and cities with high digital economy development, DTCB reduces PM2.5 emissions in local and surrounding cities. Mechanism analysis shows that DTCB has no significant impact on technological innovation, but significantly promotes economic development, thus increasing air pollution. From the perspective of DTCB, this paper deepens the research on digital finance and air pollution. Against the background of DTCB, the government should guide commercial banks to apply digital technology to increase lending for technology innovation and promote DTCB to achieve the dual goals of economic development and improvement in air quality.

The impact of digital transformation on green innovation is widely discussed. However, existing studies mainly focus on the impact of the digital transformation of enterprises and fintech company development on environmental green innovation, while ignoring the effect of the digital transformation of commercial banks (DTCB) on corporate green innovation. Therefore, to fill the research gap, this paper explores the impact of DTCB on environmental green innovation in companies based on the data of listed companies from 2010 to 2019. This study finds that DTCB has significantly promoted enterprises’ environmental green innovation. Mechanism analysis shows that DTCB can promote green environmental innovation by increasing R&D expenditures and reducing agency costs. The heterogeneity analysis indicates that DTCB can only promote the green environmental innovation of private enterprises and enterprises with a high degree of digital transformation, but it cannot promote the green environmental innovation of state-owned enterprises and enterprises with a low degree of digital transformation. From the perspective of DTCB, this paper enriches the research on the relationship between digital finance and enterprise environmental green innovation. The government should promote the digital transformation of enterprises to utilize the green innovation effect of DTCB.

Digital transformation has pass through aspects of social livelihood and manufacture services, and digital finance has become a new motor for progress with quality as the main goal of China’s financial condition. Here first elaborates on the connotation of progress with quality as the main goal, selects 20 indicators from five aspects of progress with quality as the main goal, necessity and progression productiveness, and measures the indicator weights using principal component analysis. Secondly, spatial panel information originate 30 all regions in China are used to study the coordinated action condition among mathematical finance and the progress with quality as the main goal regional financial condition using the spatial face-plate pattern. Finally, the coordinated action test and enclosure correlation are applied to verify coordinated action mathematical financial condition progression on capital situation in different regions high-quality development and the internal system of action. The empirical results show that the capital situation in different regions progression in China exhibits 86.67% more significant spatial autocorrelation, and the Moran I index values of the mathematical financial condition progression level and progress with quality as the main goal from 2010 to 2021 are both greater than 0, and both are important at the 1% magnitude, directive that the continuous create and progression of mathematical treasury supply important positive contribution to progress with quality as the main goal economic development. The research in here provides a acknowledge basis for strengthening the construction of mathematical infrastructure, improving the capital market and related policies, and expedite the digital reform transversion finance.

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