This study is focused on some halos of gilt-bronze Buddha statues made during the Three Kingdoms Period (57 B.C. - 668) which have been subjects of controversy regarding their origin and production years. There are currently nine gilt-bronze halos of the 6th century remaining today, each exhibiting a characteristic element in style. The principle motif, flame, of these halos was marked by the shape of fern in the early 6th century which gradually changed to U shapes. As for those made in Goguryeo, a design of horizontal lines provides a distinctive feature, helping find their origin. One remaining Goguryeo relic, the Gilt-bronze Halo Inscribed with the 5th Geonheung Year, for instance, displays a form reflecting an influence from China in an earlier period with an inscription suggesting that it was made in 536 rather than 596. As for Baekje relics, holes made along the edges as well as the flame design of a recently discovered glit-bronze halo in Gwanbuk-ri of Buyeo lead scholars believe that it was made under the influence from the Northern Dynasties to have been made in the first half of the 6th century.