It is a common chest wall deformity, mostly the lower part of the sternum and the lower rib cartilage connected with it protrude forward, mostly symmetrical, a few are asymmetrical, and some are mixed deformity, one side is convex and the other side is depressed, very rare also includes the protrusion of the sternal stalk and high rib cartilage, while the sternal body is relatively depressed. The incidence is second only to funnel chest, and is the second most common chest wall deformity, accounting for about 6% to 22% of chest deformities, more men than women, generally 3:1. Patients with pectus excavatum have increased anterior and posterior diameter of the chest, but narrowed on both sides, resulting in reduced thoracic volume, restricted lung development, reduced elasticity of lung tissue, resulting in reduced respiratory dynamics, poor exercise tolerance, low resistance, shortness of breath, weakness, recurrent respiratory infections, and even seriously affect cardiopulmonary function, and older patients often have a sense of inferiority, lack of self-confidence, to cover the raised chest, resulting in hunchback, and reluctance to swim and participate in outdoor activities. They are reluctant to swim and participate in outdoor activities. More obvious cases of pectus excavatum require surgical correction. In the past, surgical treatment of pectus excavatum and sternal reversal was mainly used to remove the protruding rib cartilage and sink or flip the rib cage using chest wall muscles or medical plates. The incision is large, requires freeing the muscles and cutting off the rib cartilage, and reduces the volume of the thoracic cavity, which does not achieve the aesthetic requirements of the patient. Thoracic surgeons from all over the world are trying to find the ideal surgical method. With the development of minimally invasive surgery and the application of NUSS surgery in the correction of funnel chest, minimally invasive sternal sinker (anti-NUSS surgery) modified according to the principle of Nuss surgery has been applied in recent years to correct chicken chest. Compared with the traditional surgery, this procedure has the following advantages: 1, the surgery does not need to open the chest, nor does it need to make an incision in the anterior chest wall to lift the pectoralis muscle skin piece, does not need to cut and remove the rib cartilage, does not need to perform sternotomy, which minimizes the damage to the patient; 2, the operation time is significantly shortened; 3, in line with the physiological and anatomical characteristics; 4, the plate is fixed and stable, the efficacy is exact, which is conducive to the maintenance of the orthopedic effect; 5. Early recovery time, short hospitalization period, less application of antibiotics, and low cost of medicine; 6.No incision in the anterior chest, beautiful appearance.