The United States was one of the earliest countries on legalization of acupuncture. The process of legalization of acupuncture in the United States was very hard, especially in the beginning. Legalization of acupuncture can guarantee that acupuncture will develop healthy and orderly, and it can protect the rights of the practitioners. Up to now, 44 states and 1 district had achieved legalization of acupuncture among 50 states and 1district in the United State. The legalization of acupuncture of the United States with distinctive characteristics is more and more mature and perfect day by day.