Finance, as the foundation and important pillar of national governance, plays an important role in promoting scientific and technological innovation, leading, enhancing, and safeguarding. Specifically, fiscal policy can provide input-side thrust for scientific and technological innovation through targeted and precise fiscal investment; Supporting and controlling differentiated tax preferential channels, constructing guiding incentives for technological innovation; setting a demand-side pull for technological innovation through a clear and selective government procurement channel. This text highlights. ['Main ways of fiscal policy to promote technological innovation.', 'The role of fiscal policy in technological innovation.', 'Impact of fiscal policy on technological innovation.', 'Fiscal policy needs to take into account the needs of scientific and technological innovation.']