Abstract: Based on the digital empowerment theory, this paper takes 396 high-tech manufacturing listed companies from 2016 to 2021 as samples, and explores the mechanism of enterprise digital transformation and government digital governance empowering enterprise innovation “improvement in both quantity and quality” from the micro and macro dimensions; it employs polynomial regression, response surface analysis and block variable analysis to analyze its interaction and coordination mechanism, and clarifies the multidimensional paths of digital economy in promoting the “quantity and quality” of enterprise innovation. The research results show that: (1) The digital transformation of enterprises significantly promotes the “quantity”, instead of “quality” of enterprise innovation; government digital governance significantly enhances the both. (2) There is an interactive synergy between enterprise digital transformation and government digital governance, which significantly promotes the “quantity and quality” of enterprise innovation; in a balanced state, i.e. when the two are at a double-high level, enterprise innovation performance is better, and in a non-balanced state, the “leading logic” of government digital governance is presented. (3) It further verifies that the interactive collaboration between government and enterprises can promote the “quantity and quality” of enterprise innovation by reducing enterprise management transaction costs and alleviating the information asymmetry. The conclusion enriches the research on digital economy and enterprise innovation, provides a new path for enterprises to get out of the dilemma of quality-biased innovation, and offers a new reference for government departments to implement the digital economy policy and optimize the innovation environment.

Key words: enterprise digital transformation, government digital governance, improvement in quantity and quality, interactive collaboration