Fiscal policy plays an important role in the process of economic scale of the new energy industry. It is an external catalyst to promote the rapid development of new energy industry in Hunan. Many developed countries are taking effective leveraging fiscal measures successfully to promote new energy industry that obtained its development and growth; at the same time, the development of new energy industry has accumulated rich experience in finance and taxation policy, which is accelerated Hunan as a useful reference for the development of new energy industry. Hunan new energy industry's fiscal and taxation policies are scattered, short-sighted as well as some old problems, some of the fiscal measures has not supportive effect yet on the development of new energy industry in Hunan. In view of the above problems, the fiscal and tax support system of new energy industry development in Hunan was constructed from two aspects of fiscal and tax policy through using fiscal policy on economy, trade and industry regulation and guidance; therefore, it can create a good financial environment for the accelerated development of new energy industry in Hunan province.