The objective of this study is to understand the issues and solutions considered by certified nurses(CN)in palliative care (hereinafter referred to as"palliative care CN)regarding discharge support and regional cooperation for cancer patients, and to discover the roles and responsibilities of palliative care CN. Data obtained from training sessions for 22 palliative care CNs was reconfigured and analyzed. As a result, problems related to discharge support and regional cooperation for cancer patients were classified into 13 categories and 3 core categories. The following roles for palliative care CN were proposed to promote discharge support and regional cooperation for cancer patients: (1) Inter-professional sharing of knowledge about patients and their families to reconcile the intentions of the patient and family members with predictions of progression of the illness; (2) Enable hospital nurses to obtain information about patients after discharge in order to establish a clear image for medical treatment; and(3) Support for ward nurses regarding cooperation to alleviate symptoms and offer medical care to patients who are highly dependent on medical care, and to become a point of contact for cooperation with visiting nurses.