Abstract: The public service of the U.S. experienced several reforms, such as “market supply”, “government-led supply”, “re-market-oriented supply”, and “pluralistic participation supply”. This path of change reflects that the U.S. government is trying to target both the efficiency and equity of public services and seek the balance between government’s management functions and serving functions. As the main representative of the developed countries, experience and lessons of the U.S. is helpful to public service’s reforming and service-oriented government’s building