On the one hand, the incision is hidden in the nasal cavity, and no surgical traces can be seen outside after suture removal; On the other hand, because the operation is carried out directly from mucosa to subperiosteal region, the original blood supply and ileal circulation of the nasal tip can be accelerated, and the original anatomical structure of the soft tissue of the nasal tip can be preserved as much as possible, so the whole swelling period and proliferative period are obviously shortened by more than 60% compared with the original complete incision technique.