Abstract:Technological innovation is the central junction to promote supply-side structural reform and improve national core competitiveness. Tax preference policies encourage enterprises to invest in technological innovation by means of tax expenditures, which remedy the "Market Failure" of technological innovation activities. In recent years, the tax policies in China have played an important role in stimulating enterprise technology innovation, but some shortcomings still exist. The ways to perfect the tax incentive mechanism of enterprise technology innovation are to reorient the tax preferential policy target, to increase the proportion of indirect discount, to pay tax preference policy to the small and medium-sized enterprises, to establish a tax incentive mechanism for human capital and to enhance the effect of policy implementation.