Tea has influenced the basis of Korean culture in history for a long time. The dissertation aims to establish the history of the costumes for the tea ceremony based upon historical data. During Thee Kingdom Period. there was a ceremony called Tea Offering Ceremony In Silla times, there were Tea Offering Ceremony and Royal Shrine Tea Ceremony: In Corea age, they served Tea Presenting Ceremony: In Chosun age. tea ceremony was a part of Tea Presenting and was held during official greeting feasts for foreign envoys and during feast ceremonies at the court. The costumes for the tea ceremony by period are as fellows : In Corea times, king and all the government officials wore official court attire for Enthronement Ceremony (Ka-Rye). For Official Guest Reception Ceremony (Bin-Rye), king wore official costume, but in case the envoy was not carrying an Official King＇s Letter, king wore Ordinary Costume. In Chosun times, both king and prince crown wore ordinary costumes of winged silk crowns and royal robes (with golden dragon patterned segment) for Envoy Reception Tea Ceremony. In time of royal feast ceremony, king and prince crown wore ordinary costumes of winged silk crowns and royal robes, while queen wore red purple silk robe (red purple embroidered segment). Chosun＇s royal court occasionally held tea ceremonyat royal feast ceremonies during which king also wore ordinary costume of winged silk crown and royal robe as a costume to attract good fortunes. In case of ceremonies for bad occasions, a tea ceremony was included in Royal Inquisition procedures (joong-hyung-ju-dae-eui) during which king wore simple costume (Pyun-Bok).