OBJECTIVE: Aim: This study aims to assess the impact of an educational intervention on nurses' knowledge and attitudes regarding home health care, relapse management, and psychiatric hospital admissions. PATIENTS AND METHODS: Materials and Methods: A quasi-experimental study was conducted with 106 nurses at Erada for Mental Health and Addiction. Standardized assessment tools, including a knowledge scale for home health care quality and a mental illness devaluation scale, were used. RESULTS: Results: Most participants were female 78.4% with a bachelor's degree 77%, and the average age was 2.06±.954. The analysis revealed a significant improvement in knowledge levels post-intervention P<
0.000, however, there was a slight non-significant increase in devaluation scale scores after the intervention (pre-24.55±2.96, post-25.18±3.45). CONCLUSION: Conclusions: Targeted interventions to enhance nurses' knowledge of home health care quality and promote positive attitudes toward mental illnesses can lead to improved patient care, potentially reducing relapses and readmissions among psychiatric patients. Future research should explore the long-term impact and sustainability of such interventions in mental health care settings.