Background: Psycho-education may have a positive effect on family caregivers of clients with mental disorders, and promote positive psychological states such as hope. The present study aims to investigate the effect of virtual social network-based psycho-education on the hope of family caregivers of clients with severe mental disorders. Method: This study is a quasi-experimental research with a control and experimental groups. The participants of the study were 72 family caregivers of clients with severe mental disorders (36 in each group).