The intention of this paper is to explicate Yoshiro Taniguchi's architectural thought about the meaning of the tea room through inquiring into his articles. The analysis consists of three chapters as follows : Chapter2 illustrates some aspects of the tea room that Taniguchi found out. Chapter3 clarifies the meaning of the tea room as “waki” through analyzing its functional and structural quality and movement as self-sacrifice. Chapter4 explicates the meaning of his keyword “seed” detected in the tea room, which is analyzed in the term of precedence.