Abstract:This paper tried to explore the impact of CEO overconfidence on three levels of innovation performance, including innovation input, innovation output without controlling innovation input and innovation output under controlling of innovation input, from the perspective of resource dependence theory and agency theory. The study examined the mediating role of board characteristics in the aforementioned relationship. Based on the analysis of the data of manufacturing listed companies in Chinese A-shares from 2007 to 2015, Empirical results show that there is a positive correlation between CEO overconfidence and innovation performance. Board size and CEO duality may enhance the positive correlation between CEO overconfidence and innovation performance, while board independence may weaken aforementioned positive relationship. Board liquidity may only enhance the positive correlation between CEO overconfidence and innovation input performance rather than the other two levels of innovation performance.