Part ii retrospects the history evolvement and construes the value of the system which include justice and efficiency . part hi reviews the system of alteration of action in our civil procedure law 本部分回顾了罗马法系和普通法系中诉之变更m到宽的发展史,并指出这些变迁无不体椭该制度不同价值取向之问的冲突和平衡。