However, the cartilage in the concha cavity is mainly used for rhinoplasty, because the cartilage in the auricular fossa will regenerate, its appearance will not change and the wound can be hidden behind the ear, which is not easy to be found. However, the key point of using cartilage is that the surgeon must keep the perichondrium and remove only the cartilage. Only in this way can the regeneration of ear cartilage be ensured.