Abstract:     Regional S&T (S&T) innovation corridor serves as a crucial pathway for optimizing allocation of innovation elements and acts as a wellspring for driving technological innovation in enterprises. Based on the innovation chain perspective, this paper took the pilot G60 S&T innovation corridor in the Yangtze River Delta as a quasi-natural experiment and selected Chinese A-share listed companies from 2010-2021 as the research sample. We used the differences-in-differences model to explore the path and effect of the G60 S&T innovation corridor on the dual innovation of enterprises. The research results indicated that joining the G60 S&T innovation corridor significantly promotes both substantive and strategic innovation of enterprises, with a greater incentive effect on substantive innovation. The mechanism study revealed that construction of the S&T innovation corridor mainly enhances the innovation effect of enterprises through two channels: easing financing constraints and optimizing human capital. The heterogeneity analysis showed that the incentive effect of the G60 S&T innovation corridor on enterprises′ dual innovation is more prominent in small-scale enterprises, non-state-owned enterprises, and enterprises with high absorption capacity. This paper has not only provided some empirical guidance for China to steadily promote the construction of the S&T innovation corridor and the improvement of the supporting system of the innovation chain but also offered some practical references for guiding the independent innovation of Chinese enterprises.

Key words: G60 S&T innovation corridor, substantive innovation, strategic innovation, innovation chain perspective