The best age for surgery is generally after 6 years of age and before puberty (around 14 years of age). If the age is too young, the development of the autologous rib cartilage is small and the extraction of material is limited, and also the changes in growth and development may cause changes in the shape of the reconstructed ear and deformity of the thorax, while from the age of 6, the size of the ear is similar to that of adulthood, and the development of rib cartilage can already reach the needs of surgery, and the toughness of its rib cartilage and the elasticity of the skin have met the requirements for suitable surgery.