文档介绍：I Abstract The thesis focuses onthe UNSecurity Council veto system ofpermanent members, which refers tothe principle ofthe voting control byconsensus ofpower countries. Itisthe principle that embodies the power ofthe minority against the majority .The power isfor the five countries ’exclusive use, namely Britain, China, France, Russia and the United States. Inthe thesis, the author will discuss about UNSecurity Council the veto system for permanent members according tothat ofhistorical background, legal basis, and defects and executive problems inits legal system. Particularly itraises our awareness that the UNSecurity Council veto system ofpermanent members has gradually exposed the defects inthe practical operation with the entry ofthe 21 stcentury, the appearance ofthe emerging countries and the BRICS, and the big change happened tothe shape ofthe world. Inorder tofollow the development ofthe tendency quickly, play the better role and make the contribution topreserve pace and security, UNSecurity Council the veto system for permanent members should beimproving. Key Words :United Nations ;Security Council ;Veto Power ;Institution ofthe veto 浅论联合国安理会常任理事国否决权制度 1 浅论联合国安理会常任理事国否决权制度自联合国安理会常任理事国否决权制度建立以来,就一直存在着争议。虽然安理会常任理事国否决权制度在世界和平与发展方面发挥着不可替代的作用,解决了许多复杂的国际问题,避免了一些战争情况的出现,但是随着世界新形势的发展, 特别是当世界进入到 21 世纪, 世界形势和力量对比却在不断地变化发展之中。苏联及其集团已经解体,美国尽管还是一个超级大国,但其领导地位已经受到了世界多极化趋势的挑战,发展中国家在联合国