The public housing system in the United States was always famous for its long history，completed financial system and legal security system，diversification ways of social financing and efficient operation mode of public housing. The purpose of this paper is to carding the history of public housing system in the United States，and to summarize its basic characteristics，the enlightenments of public housing system in the United States to China including speeding up the transformation to service government and construct the public housing operation mode oriented by market demand，to build public housing financing platform and promote the construction of public housing financing，to perfect public housing access and exit mechanism on the basis of fairness and justice，to perfect laws and regulations，ensure the public housing projects run smoothly.