In promoting the community-based comprehensive care system, designated cancer hospitals are required to provide decision- making support for treatment and care in the face of increasingly sophisticated and diverse treatments, to promote hospitalization and discharge support to shorten the length of hospital stay, and to implement multidisciplinary cooperation for coordination of treatment and care due to the increasing number of elderly and multi-morbidity cancer patients. However, it is difficult at present to link and integrate designated cancer hospitals, which are required to provide cancer treatment in each secondary medical care area, and community comprehensive care systems, which provide medical care and care to support daily life and autonomy and independence of patients and their families in the patients' living areas. In the future, through the promotion of networking and educational activities for healthcare professionals, as demonstrated in previous studies, it will be necessary to establish a system in which cancer treatment and community-based comprehensive care systems are linked to provide high-quality medical care and care to cancer patients.