Background: Facebook as one of the most visited online social networks provides massive opportunities and risk for users. In addition, the extensive use of Internet can increase the problematic effect of new media on students’ psychological well-being. Aim of the study: examine relationship between Facebook use and psychological well-being for baccalaureate nursing students at BenhaUniversity. Research question: What is relationship between Facebook use and psychological well-being for baccalaureate nursing students?.Design: Descriptive correlational design was utilized in this study. Setting: This study was conducted at the Faculty of Nursing Benha University. Subjects: This study was carried on all Baccalaureate nursing students. Tools for data collection: Socio-demographic data questionnaire, The Face book Intensity scale and The Ryff’s Psychological Well-Being Scale. Results: results revealed that more than one third of the studied students have moderate score on Facebook intensity scale; while the minority of them has high score .There is a highly statistical significant correlation between Psychological Well-Being and number of Facebook friends and also Facebook is part of their everyday activity. Conclusion: The students with moderate Facebook use will have moderate psychological well-being. In addition, the more time a person spends using the Internet, the more addicted they will be affect our lives. Recommendations: It is necessary to spread awareness among children, youth groups and society at large to encourage the healthiest way to use the Internet in order not to negatively.