The aims of this study were to clarify difficulties experienced by families facing the cessation of home-based care for terminal cancer patients, and to review the associated necessary nursing practices. We conducted semi-structured interviews with ten families. A qualitative research design was selected for this study, and the data was interpreted using content analysis techniques. The results were integrated into seven major categories: “unable to assess present symptoms for lack of understanding terminal cancer symptoms,” “feeling emotional pain during the patient’s aggravated condition,” “difficulties in coping with various patients’ physical symptoms: problems regarding inexperienced care,” “exhausted by living 24 hours a day with patient: lack of support, because of constraints from important people in the caregiver’s life,” and “difficulties faced by primary family caregivers in preparing a treatment environment.” Family caregivers were not able to prepare a treatment environment, because of a lack of understanding the symptoms of terminal cancer and an unwillingness to admit experiencing mental and physical burdens. The findings of this study suggested that the role of a nurse is to understand the family’s condition and values, provide required information in advance, and to adjust and prepare the treatment environment.