Tax planning refers to the taxpayers to reduce the tax burden, the tax law permission scope, advance to arrange the business activities of enterprises, investment, corporate finance activities, prior to selection and planning of scientific and reasonable from a variety of tax scheme, to use tax to give to their favorable options and policy, select the tax right, so that their tax to reduce the behavior. It is to the taxpayer in active lawfully pay taxes as subjective premise, can say the tax planning process, also is the enterprise to understand the law, tax law, enhance the learning process of legal consciousness. Secondly, the tax planning can help taxpayers to decision analysis, which can help taxpayers to make investment decisions, in order to achieve the maximization of profit. At the same time, tax planning, enable enterprises to reduce the cost, the development of space more and better, is conducive to the sustainable development of enterprises, which can achieve more benefits, but also increased the state tax revenue. Tax planning also helps to enhance the strength of enterprises and the management level, help to achieve the goal of enterprise financial management, so as to enhance the competitiveness of enterprises. This paper will use from the outside to the inside, by the way of discussion deepening tax planning for enterprise financial management function, the definition of the modern financial management, financial management concepts with the traditional separate zone. Then introduced the concept of tax planning, mainly from the principle of introducing it, then both together through the medium of enterprise, discussion and analysis of the deep. On the discussion of the subject, using the comparison analytic method, classification characteristics of tax planning, function, significance, feasibility, show. Finally, concluded a conclusion, and the future outlook.