Abstract
It seems that Balhae(渤海) had built up its national power through the international relationship from the early years of an establishment of a dynasty. And the envoys that were sent with the official duties dressed up the official uniform for a diplomatic courtesy. Accordingly, this study will be considered about the official uniform in the early years of the Balhae era. The system of the official uniform of Balhae was classified into two form as the starting from $739\sim742$ A.D. The official uniform of the early years of the Balhae($698\sim739$ A.D.) was based on the costume of the three Kingdoms[三國時代], that is, Yu, Go(待), Jo-u-gwan(鳥羽冠). These results were available owing to the reasons that the Balhaehad succeeded the culture of Go-gu-ryo(高句麗), which was the basis for the development of Parhae's own culture, and the most of the governing group and the ruling class in Balhaewere the drifting people from Go-gu-ryo. After that, which the 3th King Mun(文王), acrepted the Tang's culture positively, assumed the reins of government ascended the throne and the brisk exchange with Tang(唐) by the envoys and Suk-wui(宿衛) were dispatched to Tang, the official uniform of the Balhaewas transformed into the system of Tang. This system was similar to that of Tang in point of using a four colors and the items as Danryeong(團領), Bokdu.