The application of the knowledge of Psychiatry for the promotion, maintaining mental health of the community, Community Mental Health Nursing strategies are formulated. The concept, Scope of CMHN Practice in Day Hospitals, Half Way homes, Quarterly way homes. Group homes, Foster Homes, Sheltered Work Shops, self help groups, Suicidal prevention centres are explained., importance of MHN, various roles of Nurse in Community, Mental Health Movement in India, Historical Development mentioned., National Mental Health Policy, Objectives, Targets, Approaches, Components of National Mental Health Programme., Strategies related to Mental Health in Five Year Plans are explained in detail. The concept and components of Community Psychiatry are briefly explained.