Miyamoto was born in 1962, and graduated from Kyushu University in 1988. She currently resides in Fukuoka. Since 1980, Miyamoto has been involved in the planning and management of various international exchange operations and the production of city-centered art projects and art maps, including "Museum City Tenjin". She was commissioned by Fukuoka City Foundation for Arts and Cultural Promotion to manage "Gallery Atelier" (the fiscal 2004-2009). Since 2008, Miyamoto has based her practice in her private art center "ART BASE 88" within the "Konya 2023 Project". In 2010, she initiated the Fukuoka-Busan artist exchange operation "WATAGATA Fukuoka Busan Art Network", which entered the 5th Fukuoka Asian Art Triennale. In 2015, Miyamato became the Director of "Chikugo Art Traffic", supported by Fukuoka Prefecture.