The purpose of this study is reserch the approch and basic principle which make it possible to establish the consistent and subjective direction on the proportion method of DAPO HAPGAK STYLE House in the traditional Korean architecture. The object of reseach which should be considered in dealing with traditional concept on proportion are as follows. What is the proportional method in the plane of the Korean traditional archtecture. In this study, it was intended to find out that, what was the basis of numerical system implied in the proportion system of Korean traditional architecture and whether there can be the absolute and ideal relatioship between proportion systmes or not.