Through the information obtained from the websites of the White House, various materials research societies and numerous colleges and universities, this paper summarizes three reports released by the United States associated with advanced materials and advanced manufacturing policies, including A 21st Century Science, Technology, and Innovation Strategy for America’s National Security, National Network for Manufacturing Innovation Program Strategic Plan, and Emerging Science and Technology Trends: 2016~2045 (A Synthesis of Leading Forecasts), and finally introduces the international status and developing trend of metal additive manufacturing（3D Printing）which has been highlighted in all the three reports, hoping to provide scientific researchers with reference on manufacturing innovation and advanced materials development.