Bronze mirrors of the Jin Dynasty excavated in Gaeseong now in North Korea contain inscriptions which provide information about trade between Jin (or Geum in Korean, 1115- 1234) and Goryeo ( 918-1392) and clues to the understanding of the characteristics of the mirrors and aspects of production although few studies have been made on them so far. This study focuses on the production and distribution of Goryeo mirrors in connection with the Jin mirrors in the period between 12th and 13th century. Firstly, the inscriptions reveal that Jin mirrors were imported to Goryeo from the regional cultural hubs, particularly those in today's northeast China, between the mid 12th and early 13th century. Bronze artifacts of Goryeo, including mirrors, excavated in the area reveal a vigorous trade between it and the Amnokgang River and the east coast of the Korean Peninsula. Secondly, the use of motifs conceived from famous historical episodes characterized Jin bronze mirrors and, under their influence, Goryeo mirrors as well. Goryeo artisans in the 12th and 13th centuries eagerly imported and copied Jin mirrors decorated with Daoist motifs, Daoist immortals in particular. These Jin-style Goryeo mirrors are characterized by representational imagery exploiting palatial buildings, trees and rocks, exerting an influence upon other metal artifacts of Goryeo. This study concludes that the artifacts such as the Mirror of the Dragon, Tree and Pavilion (龍樹殿閣文鏡) and the Mirror of the Sun, Moon and Superbly Dazzling and Flourishing Sky ( 日月煌 丕昌 天 銘 鏡) were newly created by Goryeo artisans during the process of adopting the foreign cultural achievement. Thirdly, the Jin's policy to prohibit the production of copper artifacts boosted the production and trading of bronze mirrors. A serious lack of copper in this country resulted in the trading of copper artifacts, including bronze mirrors and copper artifact at high prices, turning Goryeo bronze mirrors into a lucrative export item.