This paper aims to clarify fluctuating characteristics of the services market supply and demand equilibrium of day service facilities for elderly during 20 years. Capacity sufficiency rate is calculated based on the actual number of certificated care-need person and estimated number of service user in three prefectures of the north Kanto region. Facility supplies peaked in 2014, after which supply declined. Service utilization gradually increased in 20 years. The service markets in Ibaraki and Tochigi prefectures are almost in equilibrium, but Gunma prefecture has changed to the imbalanced condition since 2013.
