Objectives: The aim of this study was to evaluate the effect of a educational nutrition program for among primipara  on pregnancy out come.  Subject and Methods: The study was carried out El-Tadamon hospital in Port- Said City This is a private hospital providing outpatient and inpatient obstetric and gynecological services in using a quasi-experimental (pre & post test) research design The subjects of the study were any primiparous pregnant woman attending the mentioned study setting during the time of the study was eligible for inclusion in the study sample if she fulfills the following eligibility criteria. Results: The results revealed that there was a significant improvement in the woman knowledge score about nutrition during pregnancy. Conclusion: Educational program has a significant and improvement impact on knowledge regarding nutrition during pregnancy, and this is negatively reflected on their dietary practices and habits