Myun Bok originated in China was introduced into Korea in ancient times. Some evidences show that it had settlled down as our own official robe already under Koryo Dynasty. And Koryo made her own regulations on Myun Bok. Kook Cho O Rye Eui(國朝五禮儀) of Choson Dynasty has comparatively detailed explanations on the way of cutting and shapes and materials. And the regulations are modeled after those of Ming China. But it has been impossible to know whether the regulations of Kook Cho O Rye Eui were strictly kept or not, because we have not enough remains through which to see it. And then we got very useful materials, Eui kue(儀軌), which are well known but have not been used in studying the history of costumes. Every Kook Chang Do Gam Eui Gue(國葬都監儀軌) have the provision of the so-called Pok Wan(服玩) set which includes the imitations or the full set of Myun Bok. And the provisions show us the illustrations colored in detail which help us understand the real shapes and the transformations of Myun Bok. After surveying the Pok wan provisions, author arrived at conclusions as follow; 1) Myun Boks are not always made in the same shape and colors. 2) The Provisions of Kook Cho O Rye Eui were not always kept strictly due to the lack of detailed directions.