Abstract
Horyuji is the most old existing wooden architecture and esteemed the founder of building technology in Japan. Horyuji was built by using highest building technology so appeared suddenly in 7th century. The building technology was transferred by the carpenter groups from peninsular Korea, background technology was also supported by ancient Chinese carpenters. This report discussed on the resources of building technology through the measurement system of the planning and dimension system of building members appeared in Kondo, Gojunoto and Corridor. Special focus point of this report is the influence of Kanejaku, the oldest measurement system in Japan, and Rohanjaku, the Chinese old carpenter’s measurement system.