The Thousand-pillar Mansionwith large scale, distinct characteristic and abundant constr uction culture in Zhejiang Sizhai Village,is an important historical monument under special preservation in China.This research can enrich the culture and content of traditional dwellings tectonic in Zhejiang. The feature ofthe Thousandpillar Mansion is researchedby using the method of visiting venue and reading reference, and meanwhile the tectonic of Thousand-pillar Mansionis explored from the angle of architectural mechanics and bionics, and cultural art and material function. It is discovered that its construction has a high research value, aesthetic value, practical use value, etc. Besides, it can be further concluded that the construction of the Thousand-pillar Mansion is a great assemblage of architectural mechanics, bionics, cultural art and material function. The research findings can be a theoretical basis and technical reference for the protection and construction of other traditional wooden frame architectures in Zhejiang Province.