Conservation treatments were done for the gilt bronze saddle accessory excavated from Tomb No. 89 in Kyo-dong, Changnyong in Japanese rule period. The saddle accessory, broken into numerous pieces, ws mixed with other remains. Principal aims of conservation treatments were to recover original shape of object and stabilize its material. In the process of treatments manufacturing technique of the remain was examined minutely. Thick layers of corrosion substances were peeled off and numerous pieces were pasted together to restore the original shape. And then the saddle accessory was mounted on an acrylic board to be handled and exhibited safely. In this process, it was confirmed that various ancient techniques of metallic crafts such as amalgam gilding, riveting, piercing, line engraving, stamping, chasing, etc. had been used to make the saddle accessory.