Schizophrenia is a chronic disease that requires long-term medical treatment and causes physical, psychological, and social problems related to the disease and the potential side effects of its treatment. One of the nursing therapies that support the family is supportive therapy. Supportive therapy is a therapy that is given to exchange experiences regarding the problems experienced to improve family coping. The purpose of this study was to determine the effectiveness of therapy supportive on the ability of families to care for family members who are people with mental disorders at Purbaratu Health Center, Tasikmalaya City. The type of research is analytic research with approach quasi-experimental to the type of experimentaltest and post-test one-group design, with a sample of 22 families were divided into 2 groups. The implementation of supportive therapy for each group was conducted 2 times at the Purbaratu Health Center. The ability of the family referred to in this therapy is the ability to recognize mental disorders and their treatment, the ability to empower other family members in care, and the ability to involve the external family in treating people with mental disorders. Based on results the Wilcoxon test obtained a significance value of 0.0001 (r<0.05). So the conclusion is that there is a significant difference in the score of family ability in caring for family members of people with mental disorders between before and after supportive therapy.