At present，the tendency of Global trade protectionism is escalating，and the trend of anti-globalization is prominent. The CPC Central Committee clearly supports the construction of a free trade port with Chinese characteristics and promotes the management policy and institutional system of building a pilot zone step by step and stage by stage in Hainan. This report comprehensively evaluates the strategic layout of Hainan free trade port，the construction of comprehensive system，the construction of investment and trade system，the construction of tax system and the construction of customs system. At the same time，it deeply discusses the construction of the legal system of Hainan free trade port，and puts forward targeted and effective policies，increasing stress testing，liberalizing investment access，innovating regulatory system and improving customs clearance efficiency Improve the tax system，form a depression effect，improve the legal system and provide priority protection.