The deepest part of the depression is often located at the root of the sternocleidomastoid, and the surface looks like a funnel, so it is called funnel chest. According to whether it is symmetrical or not, it is classified as non-adult and adult funnel chest, and according to whether it is combined with flat chest, it is classified as funnel chest combined with flat chest and simple funnel chest. It is divided into mild, moderate and severe according to the severity. The cause of funnel chest is unknown, and it is familial. Some patients have funnel chest at birth, but many patients respond that funnel chest is found and aggravated in adolescence, so it can be further divided into congenital and non-congenital. Funnel chest mostly has no clinical symptoms, although there is compression of the heart and lung view, but clinical examination in mild to moderate funnel chest heart function lung function is generally normal and has no significant impact. However, the psychological impact of the shape on the patient should be concerned. Diagnostic aspects apply chest CT and cardiac ultrasound to clarify the funnel chest typing and staging, as well as whether combined heart disease and pulmonary alveoli. For congenital funnel chest surgery can be performed after the age of 3 years, while non-congenital cases can be treated with surgery as early as possible. Treatment methods are lift and flip, and currently nuss surgery, which has the advantage of being minimally invasive.