Funnel chest is a congenital and often familial disorder with a 4:1 male:female ratio. Most people believe that the deformity is due to overdevelopment of the rib cartilage and compensatory posterior displacement of the sternum. Due to the thoracic deformity, the child’s heart and lungs are compressed and lung function is reduced, manifesting as poor activity tolerance, low lung capacity, susceptibility to palpitations and respiratory infections, and developmental delay, which seriously affects appearance. Early surgical treatment is advocated, and the best time for surgery is between 6 and 12 years old. Traditional surgical methods include rib shaping, sternal elevation, sternal reversal, etc., which are highly traumatic and have relatively high surgical risks, and are difficult to be accepted. In 1998, NUSS, an American, first introduced the boneless resection method for correction of pediatric funnel chest. The minimally invasive method for correction of pediatric funnel chest, NUSS surgery, performed with the assistance of thoracoscopy, has the advantages of hidden incision, short operation time, less bleeding, early activity, no free chest wall muscle flap, no rib and sternal resection, long-term maintenance of chest extension, expansion, flexibility and elasticity compared with the traditional operation. This has created a brand new idea for the treatment of funnel chest, with the advantages of flexibility and elasticity. However, it should be noted that NUSS surgery has relatively high postoperative complications compared with traditional surgery, such as pneumothorax, pleural effusion, pulmonary atelectasis, postoperative plate sliding and rotation, and rejection reaction, etc. Most of them improve well with active treatment. 6-12 years old is the best time for surgical correction of NUSS, and extensive symmetrical funnel chest especially combined with flat chest is the best choice for NUSS surgery. The heavily depressed limited funnel chest and the severely asymmetrical type should still be selected for the traditional procedure.