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, the original blood supply and lymphatic circulation of the nasal tip are not destroyed, and the original soft tissue anatomical structure of the nasal tip is preserved as much as possible, so the overall swelling period and proliferative period are obviously shortened by more than 60% compared with the original complete incision technique.