The purpose of this paper is to clarify the beginning of Kaisho (meeting space) concerning the room for Uta-awase (meeting of poetical composition matches). By this study, I tried to indicate the change of the room for Uta-awase and its factors. The treatise is organized in the following manner: Introduction Chap.1 A spatial characteristic of the room for Uta-awase. (1) Uta-awase as a pleasure. (2) Uta-awase in the period of ex-Emperor Gotoba. Chap. 2 A primary factor bringing the changes of the spatial characteristic in the room for Uta-awase. (1) A change of Uta-awase. (2) Uta-awase as a temporary meeting. (3) A room for Uta-awase as a private space of ex-Emperor Gotoba. Conclusion
