Choryang-weagwan which was the largest international trading place between Joseon Dynasty and Tokugawa Shogunate had been maintained from 1678 through 1872 in Busan. Particularly, they had 21 times repairing constructions for 200 years since its establishment. It is noticeable that Joseon Dynasty permitted Tokukawa Shogunate to construct main pavilions and guesthouses as his style due to the good-neighbor policy between two countries, and Tokukawa Shogunate struggled to achieve his own culture in that place under the supervision of Joseon Dynasty For satisfying his needs, the architectural craftsmen of Tokukawa Shogunate were mobilized by the chief of construction company which was called kumi-gasira in the most of cases. When they came to Busan for the construction, they brought their own architectural tools. On the one hand, the carpenters and workers of Joseon Dynasty were organized by the traditional construction superintendents which were called Gamdong-gwan and they had to carry out their responsibilities with Japanese technicians at the same workplace. Judging from this fact, the construction site of Weagwan was the good place for exchanging the architectural technology between two countries. This study especially focuses on Tokukawa Shogunate craftsmen who made the repairs of Dongwan-samdaechung in 1727 such as carpenters(Dai-ku), sawyers(ko-biki), and surveyors(Tsue-tsuki) and their tools such as Hatsuri(=Masakari) and Yo-ki(=Oh-no). The constructions in this period, there were not only the repairs of 3 major pavilions including the trading center, but also one of the most active repairing constructions comparing with other period, therefor these were important constructions to shows us repairing construction of Choryang-weagwan of those days.