Abstract:Focusing on the basic issue that the fiscal policy and financial support influence carbon emissions, this paper uses external theory, Bigu tax, Coase theory and collaborative governance theory to interpret the mechanism of environmental tax policy and financial support influencing carbon emissions. This paper uses 1999-2014 Chinese provincial panel data, builds dynamic panel model, uses GMM two-step method to test the effects of environmental fiscal policy and financial support on carbon emissions. The results show that: increasing the environmental fiscal and tax are significantly negatively related to the carbon emissions, obtaining much more financial support, carbon emission reduction effect is more obvious, low carbon finance and carbon emission are positively related. Therefore, the government should increase environmental governance fiscal reform, accelerate the development of carbon finance, deepen the reform of energy prices and industrial structure upgrading, and give full play to the environmental taxation policy and the financial support.