Background: Congenital diaphragmatic hernia (CDH) is an anatomical defect of the diaphragm, which allows protrusion of abdominal viscera into the chest, causing serious pulmonary and cardiac complications in the neonate. Objective: In this case report we aimed to present a rare case of late presentation of congenital diaphragmatic hernia. Patient and method: We reported a late diagnosis of CDH at age of 3 months, who was referred to our center as a persistent left sided chest infection that needs necessarily intervention. Result: At this late-presenting patient, which could be due to small defect in the diaphragm and could be missed antenatally or even in early postnatal period, it is expected to get worse when bowel distended, or patient stressed. Management of this condition was explored in detail, survival and prognostic factors were addressed. Conclusion: CDHs are still a diagnostic challenge. Some are still missing in our community, and we need to improve medical services starting from antenatal visit. CDH should be kept in mind as a potential differential diagnosis in early infancy period for any patient presented with respiratory distress.