As the biggest sports power in the world，United States，the perfect public sport service system laid a solid foundation for its vigorous development in sport.Through using the methods of literature review and logical analysis，this study systematically elaborated American public sport service’s history，connotation，operating form，laws and policies，and performance evaluation and etc.After that，taking “United States President’s Council on Fitness，Sports & Nutrition” as an example，we analyzed this department’s status，tasks，and the obligations in its overall process of supplying public sport service in the United States.Study found that the United States ultimately improved the efficiency of supply，quality and consumer satisfaction of its public sport service by innovating public-private cooperation mode to carry forward the reform of marketization and making the advantage of its enormous social groups and non-governmental organizations that have many professional teams and management techniques.Exploring the theory and practice of American public sports service system can provide related reform experience and enlightenment for China，and also put forward new ideas for China’s future development of public sport service.