Diaphragmatic effacement is a congenital disease caused by a defect in the muscle. The diaphragm in patients with this disease is only like a thin membrane, so the organs in the abdomen will push the diaphragm up, taking the place of the lungs. The method of treating diaphragmatic effacement currently applied by doctors is thoracic endoscopic surgery. This is a treatment method that brings high efficiency and good prognosis.