Rib development may be approximately symmetrical on both sides, but not completely symmetrical, and there may be differences in height and corresponding asymmetrical manifestations. There is no way to correct the asymmetry of the thorax under normal circumstances, and the only way to correct the situation, unless it is a serious asymmetry, is to amputate the ribs after and will re-correct them, so that the ribs will be fixed at a certain angle and fixed with steel plates to let the ribs grow, but this is more traumatic and it is not recommended to take conventional corrective treatment. If the asymmetry of the thorax, you can properly practice the muscle strength of the thoracic dorsal muscles, which will cover the asymmetry of the thorax after the muscle strength of the thoracic dorsal muscles has increased in size, and will also increase the beauty of the thorax, and achieve the purpose of not having to correct it.