Seok, shoes worn for rituals that originated in China, is worn as part of a formal dress in Korea. The Seok for men were worn with Myeonbok(冕服: kingly ceremonial costume) and Wonyugwanbok(遠遊冠服) and the Seok for Jeokui(翟衣: queenly ceremonial costume) and Jangsam(長衫). Myeonbok, Wonyugwanbok, Jeokui and Jangsam were ceremonial costumes of ancient times. This paper examines Seok, which has never been the focal point of a study, and focuses on the period of Joseon(1392~1897). It was possible to concretely identify its changes in each of the periods and genders by means of the literature and picture data. It turns out from this paper that a unique Korean style emerged in the days of Kings Yeongjo(英祖: 1694~1776) and Sunjo(純祖: 1790~1834). The Seok that were imported from China after the Goryeo period included a neck part, which was a departure from its original form. However, during this period, fences were added on the top of the shoes, and rings were added to thread laces in Seok from China. Women wore their Seok in this period with different ornaments in accordance with the different situations.