The United States is the world’s most advanced manufacturing nation，however，US manufacturing’s status in world market and position in national economy has been a downward trend in recent years. In order to improve the competitiveness of US manufacturing，the Obama administration has proposed national strategy of re-industrialization，trying to grab the commanding heights of world manufacturing industry competition. With the implementation of the new strategy and the adjustment of the global manufacturing industry competition pattern，US manufacturing is undergoing new changes.