Abstract:The traditional architecture is divided into structural carpentry work(Da-mu zuo) and wooden decoration work(Xiao-mu zuo). The structural carpentry work refers to beams, columns, brackets, rafters, etc. The wooden decoration refers to the Inner eaves decoration and outer eaves decoration. Outer eaves decoration refers to the doors and sill frame of exterior building. Inner eaves decoration is interior decoration. The decoration of traditional architecture shows high artistic quality. This paper introduces in detail the scale determination, material use, preparation, method and installation of various doors, Windows and partitions in the decoration of outer and inner eaves of traditional architecture.