The process of inheritance and distribution of family properties is a very critical mechanism in the evolution of vernacular architecture, but in the past, the studies of architectural history always neglect it. This paper is then to analyze the social process of inheritance and distribution in "Jiu-fen" ( one of ways of dividing up family properties) process of Hsiue Yung-nan's "Yang-lou" ( western style mansion) in Zhushan, Jinmen, and to use "Jiu-shu" written in 1939 as a primary material for the further check of the principle of inheritance and distribution of buildings. Finally, the paper combines the social mechanism with architectural type and cultural form in the discussion that in order to further understand the evolution in physical space.