Background: Depression is a major psychiatric disorder worldwide. It is a leading cause of individual disability and family burden worldwide. The aim of the study: the aim of this study was to investigate the effect of family intervention on caregivers' burden, depression, anxiety and stress among relatives of depressed patients. Subjects and method: A quasi-experimental design was conducted at the inpatient and outpatient Psychiatric Department Mansoura University Hospital, Egypt. Ninety five families participated in this study (n = 95).