We have treated three children with traumatic diaphragmatic hernia appearing after blunt abdominal trauma. The hernia was on the right side in two patients and was accompanied by liver and lung injuries. The most common site of diaphragmatic rupture was the postero-lateral area in both sides. Diagnosis was suspected in all of them with chest radiograph before operative management. The transabdominal approach has proven to be efficacious in repairing the defects and often require emergency care. The diaphragmatic repair was performed using non absorbable interrupted mattress sutures. No prosthetic materials were required.