Abstract:Under circumstance of none design drawing, the carpenters of Dong Minority create a method to obtain, record key dimension information, and to guide construction. This method not only meets the needs of standardized construction of timber structure without drawings, but also solves the problems of flexible dimension caused by the natural attribute of the timber. Not only bases on a certain standard “Chuan-dou” construction logic, but also on mechanical features, processing technic and assembling method, Dong minority’s drum tower has a completed clarifying, locating and identifier system. This plays an important role in marking the element one by one and confirming the construction of the whole structure.