The Kut is the core of the traditional folk religion. The afterlife wedding Kut actually performs a traditional wedding ceremony by personifying the deceased in the process of performing the composition of Kut geori that cannot be observed from other Kuts, which is an important means to convey the situation of Kut more clearly. A traditional wedding ceremony performed in the Kut enables the audience to understand the meaning behind the Kut. The costume worn in the traditional wedding ceremony of the afterlife wedding Kut makes the audience understand the existence of the deceased by the use of a scarecrow dialect and makes them feel a vivid sense of the scene emitting from the Kut, which performs a traditional wedding ceremony in the composition of Kut geori. The results of this study showed that a shaman who led the afterlife wedding Kut had a scarecrow that symbolized the bride and a bridegroom wear the traditional wedding costume in order to visualize the deceased and express the symbol of a wedding which could not be made in this world. It can be interpreted that the traditional costume derived from the afterlife wedding Kut plays a symbolic role, which converts the deceased into a living person through the formal aspect of ceremonial costume and the cultural aspect of wedding ceremony.