The cruise tourism industry of the Free Trade Port is an important industry that promotes the construction of an international tourism center in Hainan, and legalization is the basic path to promote the international development of the cruise tourism industry of the Free Trade Port. The development positioning of China’s characteristic free trade port cruise tourism industry highlights Hainan’s geographical advantages and industrial characteristics. Grasp the legal and regulatory attributes of the cruise tourism industry in the free trade port, and promote the construction of a “China Cruise Headquarters Economy” and a “World Cruise Economy Center” through regulation. Focusing on regulating the protection of the rights and interests of cruise tourists, the public order and safety of cruise tourism, the rule of law in the cruise tourism market, and the mechanism for resolving cruise tourism disputes, drawing on the legal experience of the development of cruise tourism industry outside the region. Explore the legal guidance, protection, and promotion mechanism of the cruise tourism industry in China’s characteristic free trade ports, comprehensively promote the opening up, innovation in business formats, and upgrading and transformation of the cruise tourism industry in free trade ports. Suggest the formulation of the “Hainan Free Trade Port Cruise Tourism Development Promotion Regulations”, initiate the adjustment and regulation of the development of the cruise tourism industry in the free trade port, strengthen the central and local legislative mechanisms, build a “cruise passenger centered” cruise tourism dispute resolution mechanism, promote the regulation of the new legal order of the cruise tourism market in the free trade port, and create a relaxed, open, and convenient development of the cruise tourism industry in the free trade port with Chinese characteristics a predictable legal environment.