With the development of global economic integration, building a world-class facilitating business environment has become an urgent need for Hainan Free Trade Port. To solve the existing problems in financial policies, legal supervision, and other aspects, this paper takes Hainan Free Trade Port as an example to analyze and study its institutional integration strategy for creating a world-class facilitating business environment. The specific integration strategies are summarized to promote the internationalization and facilitation of the business environment of Hainan Free Trade Port and promote the high development of the local economy.