Diaphragmatic bulging refers to congenital dysplasia of diaphragmatic fibers, or phrenic nerve paralysis leading to diaphragmatic uplift, so as to cause cardiopulmonary compression, resulting in a series of respiratory circulatory changes in the disease, often accompanied by abnormal movement of the diaphragm on the affected side, leading to respiratory circulatory disorders. Its etiology can be divided into congenital and acquired, mainly related to diaphragmatic dysplasia, heredity, trauma, infection, tumor and other diseases. Its clinical symptoms, some children feel headache, dyspnea, often upper respiratory tract infection, asthma, cough, fatigue, etc. It also affects the digestive system and may be complicated by intermittent intestinal obstruction. Severe cases even lead to respiratory and circulatory failure.