Diaphragmatic elevation is an abnormal elevation of the diaphragm caused by congenital dysplasia of the diaphragmatic fibers or by phrenic nerve palsy. Due to congenital dysplasia of the diaphragm, the muscle fiber layer or collagen fiber layer is defective to varying degrees, and the expanded diaphragm is a fibrous membranous structure, often accompanied by paradoxical movements of the affected diaphragm, which is clinically manifested as a syndrome with respiratory symptoms. The damage caused by the disease to patients is very great, so patients must pay attention to early detection and early examination, timely treatment after diagnosis Examination methods: 1, chest X-ray: is the main method to check the diaphragm expansion, the rising diaphragm like a smooth and complete curve, diaphragm paralysis can show the paradoxical movement of the diaphragm. 2.Gastrointestinal tract imaging and barium enema: It can reveal elevated colon, upside down stomach or combined torsion. Pulmonary function tests: To determine the degree of diaphragmatic weakness, the difference in tidal volume (ΔVc) between the standing and prone position is mostly used to assess diaphragmatic function. The literature reports that diaphragmatic bulge generally manifests as a limited ventilation disorder, with an average reduction in tidal volume of 74% to 81% of the expected value, with no significant effect on pulmonary function in patients with limitations.