In recent years，voluntary service has developed rapidly all over the world. As one of the most developed countries in the west，the voluntary service mechanism of America is perfect，not only in practice but in experience. It also has some reference significance for the development of voluntary service in china. This paper reviews the development course of American voluntary service in modern times and sums up the basic experience of development，including national participation，organizations involvement，project management，social support，funding sources，incentive security.