Background: Breastfeeding is an extremely time-sensitive relationship. Experiences with breastfeeding in the first hours and days of life significantly influence an infant’s later feeding. The study aimed to explore the effect of baby-friendly hospital initiative breast feeding program on maternity nurses, mothers and infant outcomes. Subjects &methods a quasi-experimental design was used. The study was conducted at obstetric departments at Shebin – Elkom teaching hospital, Menoufia university hospital and Banha university hospital. A simple random sample of two hundred mothers and 50 maternity nurses were involved in the study. 5 tools were used to collect data. Results: There was statistically significant difference between case and control group regarding mothers' knowledge, attitude regarding breast feeding and practice of sex steps of baby friendly hospital initiative intervention. A significant improvement was observed in nurses' implementation of baby-friendly hospital initiative breast feeding intervention immediately after program implementation. Conclusion: Significant improvement in maternity nurses, implementation of ten steps of baby – friendly hospital initiative intervention after program implementation. Significant improvement in mothers' implementation of six steps of baby – friendly hospital initiative intervention after program implementation. Recommendations: Maternity units should be encouraged to undertake significant strategic and practical changes required to achieve baby friendly hospital initiative standard status