中文摘要：
  民法體系分為內在體系與外在體系，內在體系的價值取向導引外在體系，而外在體系的各個要素——概念、規范與制度構成內在體系的載體。隨著社會基礎的變遷，現代民法內在體系形成了意思自治、保護弱者、信賴保護與自己責任的基本原則，并滲透到外在體系的概念、規范與制度中。中國民法典的制定，應結合中國社會基礎，重視民法雙重體系的建構。通過定位民法中的“人”，梳理現代民法的內在體系與外在體系在物權法與債法中的體現，檢討中國民法各個具體部門法的瑕疵，以此推動中國民法典的制定。
英文摘要：
  (9)Transformation of the Social Foundation and Construction of a Dual System of Civil Law Zhu Yan·151· The civil law system is divided into an internal and an external system. The value orientation of the internal system guides the external system, whose components (concepts, norms and institutions) serve as a vehicle for the internal system. As the social foundation changes, the internal system of modern civil law has developed such basic principles as private autonomy, protection of the disadvantaged, protection of reliance interests and selfliability, principles that have permeated into the concepts, norms and institutions of the external system. The formulation of the Chinese civil code should take into account the foundations of Chinese society and give due weight to the construction of a dual system of civil law. By defining “person” in civil law, clarifying the expression of the internal and external systems in both the law of real rights and the law of obligations, and examining flaws in specific branches of civil law, we endeavor to advance the formulation of Chinas civil code.