To evaluate the historical meaning of the successive diminution method used in the "KIKUDAKI-NO CHUMON", this study analyze some Japanese typical architectural manuals "Kiwarisho". The manual "KIKUDAKI-NO CHUMON" is one of the oldest "Kiwarisho", and "JUJU-NO MA-NO KOTO" is a part of “KIKUDAKI-NO CHUMON”. It describs about the successive diminution of the Pagoda column spacing. It was written to the 14th century, and the oldest one. Therefore, the method description are important in the history of the architectural technology. This study clarifies unique historical position of this method description.
