Abstract:This paper takes 421 high-tech enterprises from 2010 to 2015 as samples to investigate the influence of diversification and corporate governance on technological innovation. The results show that the degree of ownership concentration has a different impact on technological innovation for enterprises with the different degree of diversification. Fund holding has a significant impediment to the technological innovation of enterprises with high degree of diversification.Board size and technological innovation have a significant positive U type relationship for enterprises with high degree of diversification. For enterprises with different degrees of diversification, the impacts of equity incentive and salary incentives on the technological innovation are different. Therefore, corporate governance should be matched with the degree of diversification of enterprises. Enterprises should adopt a flexible corporate governance mechanism in order to promote the technology innovation and to enhance the core competitiveness of enterprises.