Minimally invasive Nuss surgery for funnel chest Funnel chest is a common chest wall deformity, which is a depression of the anterior chest wall centered on the sternocleidomastoid, the scope of which includes the sunken lower sternum, and the rib cartilage on both sides of it bends backward, so that the entire depression is shaped like a funnel and gets its name. The child is often thin, prone to upper respiratory tract infections and limited in mobility. Panic, shortness of breath and difficulty in breathing occur during activity. Psychologically, children may also be afraid to show their upper body because of the sunken forehead, and are reluctant to participate in many outdoor activities such as swimming, ball games, dancing, etc. In the long run, they may present negative personality traits such as shyness, hesitation, and shrinkage, or even develop depression or psychiatric symptoms, which seriously endanger the physical and mental health of the child. More severe or symptomatic funnel chests require surgical treatment. Traditional orthopedic surgery, including sternal reversal, can improve the deformity, but it requires cutting the rib cartilage and sternal osteotomy and fixing with steel pins, which usually takes 3-4 hours. At present, we use the most advanced minimally invasive technique for the correction of funnel chest – minimally invasive Nuss surgery to treat funnel chest. The procedure involves only the thoracoscopically guided insertion of a tailor-made metal plate that pushes the sternal recess and all the inwardly deformed rib cartilage outward to perform the corrective surgery, but no ribs are removed and no pectoralis major muscle is incised. The procedure can be completed by making tiny incisions of about 2 to 2.5 cm on both sides of the chest wall, and takes an average of 35 minutes to complete. In addition to improving cardiopulmonary function, it can also correct the position of the sternum and ribs and take into account the aesthetic appearance, which is especially important in girls. Minimally invasive Nuss surgery for funnel chest is appropriate at the age of 3-12 years, with 6-12 years being the best. The indications for surgery are: 1, age > 3 years, best age 6-12 years. 2.Moderate to severe symmetrical funnel chest deformity with Haller index >3.2 on CT. 3.Pulmonary function tests suggest restrictive or obstructive airway pathology, susceptibility to upper respiratory tract infection, reduced tolerance for strenuous activity, and shortness of breath when running or climbing stairs. 4.The heart is displaced by pressure and the electrocardiogram shows myocardial damage. 5.People who have failed other surgical methods. 6.Adolescents who have a serious psychological burden and require correction of appearance.