Funnel chest is a common concave deformity of the anterior thoracic wall, while chicken chest is a wedge-shaped projection of the anterior thoracic wall, like the sternum-like disease in birds. There is often confusion between funnel chest and chicken chest, which can be diagnosed clinically by visual inspection. The causes of these two deformities are the following: 1, congenital developmental abnormalities: refers to the fetal or infantile period, the affected child due to the development of the vertebrae, sternum, rib imbalance caused by the thoracic deformity. 2, malnutrition: infants and toddlers fail to get sufficient nutrition after birth, resulting in some malnutrition diseases over time, such as pediatric rickets, and this malnutrition disease will gradually affect the development of the sternum, ribs, etc., resulting in thoracic deformities in young children. 3, secondary to diseases in the chest cavity: such as heart enlargement on the chest wall compression or some congenital heart disease to form a chicken chest deformity, and chronic abscess caused by flat chest deformity. Light symptoms of thoracic deformity generally do not cause serious impact on human physiology, only need to take some preventive measures to prevent the development of thoracic deformity can continue. Serious thoracic deformities require effective treatment to avoid damage to the human body, such as funnel chest will cause compression of the heart, lungs and other organs in the chest cavity, and even cause heart displacement, and also affect the normal breathing of people, and if effective treatment measures are not taken at this time, it is also easy to cause respiratory infections and other serious diseases. If surgery is required, a chest x-ray and cardiac and cerebral function measurements are needed to determine whether the patient has indications for surgical treatment. Some children with funnel chest deformities are not severe and may correct themselves as they grow, and can be observed until the age of 3 to 5 years before determining whether surgery is needed. In the past, chest wall deformities were corrected by large open incisions, which had poor results and long surgical scars. In contrast, the minimally invasive technique of chest wall deformity correction only requires two small incisions of about 75 px in the armpit to complete the surgery.