The United States is in the leading position in the development of intelligent connected vehicles，its connected technology has strongly developed，and the power of the upper，middle and lower reaches of the industry is balanced. The United States federal government and the state governments have enacted legislation to promote technological innovation and application，improve road traffic safety，and formed a more mature experience. This paper summarizes the development of intelligent connected vehicles in the United States from several aspects，such as the policy regulations，standards，vehicle networking technology，test，enterprise layout and demonstration operation，and shows the research results of the latest technology of the American automobile industry in the fields of intelligence and networking. The advanced experience of the United States has important guiding significance for China to establish and perfect the strategic planning，policy system and standard regulation，as well as to promote the independent research and development，technology innovation and industrial application of China's Intelligent connected vehicles.