Japanese pavilion named HO-O-DEN (Phoenix Hall) in the exposition in Chicago, 1893, is important as the first Japanese traditional style building designed by a Japanese architect who studied Western architecture. Its form designed by Masamichi Kuru, however, is thought to have been influenced by the goals for participation of Japan in the Exposition and the participation of Ryuichi Kuki, Kakuzo Okakura and Kentaro Yanagitani with the Exposition office of Japan. Yanagitani had opinions regarding the Japanese pavilion and Kuki and Okakura had pride in Japanese art. This paper reports the motivation for and the factors surrounding the HO-0-DEN's construction.