Introduction: Sleep disorder is one of the most common problems in elderly people. The present study is focused on the effectiveness of educational intervention on sleep quality and psychological well-being in the elderly people. Method: This is a Randomized educational field-controlled trial which was conducted on 90 elderlies with the sleep disorder, who have been selected using systematic random sampling from the clients of comprehensive health centers in Borazjan, Iran, 2019. The educational intervention was presented for 5 weeks by lecture, group discussions and virtual learning methods. Data were collected by the Pittsburgh Sleep Quality Index and the Ryff’s Psychological well-being scale before and 2 months after the intervention. The data were analyzed using SPSS-25 software using independent t-test, and Chi-square test. Results: The results showed significant statistical differences in sleep quality, subscales of sleep efficiency, sleeping time, and taking sleeping pills in experimental and control groups after the intervention (p≤0.005). Moreover, significant statistical difference was observed in terms of the mean scale of psychological well-being between experimental and control groups (p=0.036). Conclusion: Behavioral interventions can make various advantages for elderly people. Therefore, this study suggests providing such interventions in a wide range in comprehensive health centers, and boarding centers for the elderly.