During the Heian period, the word, 'yujo,' came into existence, and especially yujo in Eguchi and Kanzaki region (Amagasaki City), which had flourished for water transport of Osaka Bay and Yodo-gawa Water System, were known.
平安時代に「遊女」の語が現れ、特に大阪湾と淀川水系の水運で栄えた江口・神崎(尼崎市)の遊女が知られている。