From six aspects such as the real-time market construction, the secondary market, capacity market construction, market trends, market process, the energy market and transmission power market, America's electricity market reform experience is detailed analyed.In view of congestion management problems, the congestion revenue of the market is analyzed based on the analysis of the congestion charging of transmission lines and the absence of congestion charging.This paper introduces the main objectives of the regulation of electric power market in the United States.Finally, some experiences have been put forward in the process of power market reform.