This short essay studies the two Bushido comparatively, one is the Bushido of Silla that is called the hwa-rang & hwa-rang-do, the other is the Bushido of Satsuma feudal clan that is called the Hego-nise. “Sam-gug sa-gi”“Sam-gug yu-sa”“Dong-gug tong-kam”are basic documents of the Bushido of Silla. The timing when their books were transmitted into Japan shall be the most important and crucial points, because it suggests whether Silla Bushido has given any influence upon the formation of the Satsuma Bushido. This short essay try to search and to confirm the detailed definite time when “Dong-gug tong-kam”is transmitted into Japan, by analyzing the preface of “Dong-gug tong-kam”in the Historiographical Institude of Tokyo University and by way through clarifying following points, ① Who did published the “Dong-gug tong-kam”in Tokyo University?　② When was it published?　③ Who is it to have added guiding marks for rendering classical Chinese into Japanese?　④ others.