The cause of funnel chest is still unknown, but it is generally believed to be a congenital developmental anomaly. The inward sunken sternum squeezes the important organs in the chest cavity such as heart and lungs, resulting in restricted growth of the thoracic organs and prone to recurrent respiratory infections such as cold, cough, fever, decreased activity tolerance, shortness of breath, etc. As children grow older, some serious complications such as scoliosis, asymmetrical funnel chest, sternal torsion, etc. may occur after school age. In addition to the physiological effects of funnel chest on the child, it can also cause greater mental burden and psychological stress to the child and parents. These children are often ashamed to expose their foreheads, refuse to wear tank tops in summer, are afraid to go swimming, are introverted and withdrawn, etc. Younger children with mild funnel chest do not need to be treated urgently because it does not affect the respiratory and circulatory system much, and it may decrease with growth and development. Children with moderate and severe funnel chests should be treated surgically. In general, surgical treatment can relieve the compression of the heart and lungs by the sunken sternum and ribs, resulting in a significant reduction of respiratory tract infections and an increase in activity tolerance, as well as a significant improvement in the appearance of the child’s chest and a good cosmetic effect, thus relieving the psychological pressure of the child and parents. In the past, the treatment of funnel chest took the form of sternal reversal surgery, which has a long surgical incision, great trauma, much bleeding, long operation time, slow recovery, and leaves a long scar, which seriously affects the aesthetics. The treatment of funnel chest in our department adopts “minimally invasive funnel chest orthopedic surgery” or NUSS. A minimally invasive incision of 2 cm is made on each side of the chest wall of the child. A special stent plate is fixed behind the sternum outside the chest cavity to elevate the sunken sternum to a normal level, which makes the thorax stand up and flat and relieves the compression of the sternum on the internal organs of the chest cavity. This operation is less traumatic. Less bleeding, short operation time (about 30 minutes), fast postoperative recovery, beautiful appearance, and good results.