This study tries to get a solution to existence and developnent of 「Soiseo」 in Korean architecture. The explication of Korean archit-ecture is needed to understand Chinese architecture that have influenced Korean architecture.This approach will explicate a shape of 「Soiseo」 in Korean architecture and an outline of the fornalization of 「Soiseo」. Also this approach will nake clear in comparison with Chinese and Japanese architecture that the shape of 「Soiseo」 in Korean architecture is extraordinarily various and-the reason of exist-ence of 「Soiseo」 is different between 「Chu-shin-po style」 to 「Ta-po style」. Conculusively, there are two types of chronological developnent. One is as asculptured decoration in the end of 「Hiziki」, the other is as an evolution of 「Odaruki」.