Abstract:As the development of offshore oil and gas development, strict supervision and management of environmental protection of these activities has been highly demanded.Development. This paper expatiates the legal system of offshore oil and gas development environmental protection in the USA, and analyzes the adjustment of offshore oil and gas supervision framework after the Deepwater Horizon oil spill. After studying regulations in the whole process of offshore oil and gas development activities, the paper summarizes the experience of offshore oil and gas regulation in the United States, that is, first of all, a complete legal and regulation system has been established; secondly, many economy policies such as economy punishment and U. S. Oil Spilling Liability Trust Fund(OSLTF) have been applied in the management; finally, an efficient marine oil spill emergency has played a great role in the USA. The paper puts forward some enlightenment, and hoping to provide some references to enhance the management of our offshore oil and gas development.