This chapter introduces the advent and development of multipartite action system, especially its history of development in the USA, explaining that it is not what the western countries all have, but that it is produced with the development of society. 本章介绍群体诉讼制度的产生和发展,着重论述了其在美国的发展史,说明群体诉讼制度不是西方国家共有的制度,而是随着社会的发展产生的。