Idiopathic Perforation of the transverse colon in neonate is a rare finding in clinical practice. We reported a case of Idiopathic neonatal colonic perforation, colic perforation is an extremely rare condition and very few cases have been reported in a full term new-born. We reported the first case of a new born at 39 weeks of gestation, who, twelve days after birth, had pneumoperitoneum without any demonstrable cause. Surgical exploration showed a transverse colonic perforation, the perforation was closed primarily. The postoperative course was simple, the following up was made every two weeks during six months. The second case Spontaneous neonatal gastric perforation is rare. We report the case of a full term 4-day old newborn who required resuscitation at birth. On the second day of life he had extensive abdominal distension. Abdominal x-ray without preparation showed pneumoperitoneum. Laparotomy showed a perforation at the level of the antrepyloric, measuring 1,5 cm in diameter, treated by simple surgical suture. The patient dead on the first post-operative day.