西方遗嘱继承经历了“家族协同说”“、意志说”到“社会利益说”的理念嬗变,而这一演变过程具有合理机制,表现为遗嘱继承概念自身的内涵张力、人类三重属性的矛盾运动、政治因素的发展推动和社会经济条件的根本需要等四个方面。正是这一合理机制的形成,使得当代西方遗嘱继承理念具有鲜明的时代性、逻辑性和实践性。 The inheritance of the will in the West has undergone the evolution of the concept of “family synergy” and “the social interests of the family” to “say”, and this evolutionary process has a reasonable mechanism and manifests itself as the intrinsic tension of the concept of will inheritance, The contradictory movement of human triplets, the promotion of political factors and the fundamental needs of social and economic conditions. It is precisely this formation of a reasonable mechanism that makes the concept of the will of the will of the contemporary Western World distinctly contemporary, logical and practical.