1. The defect is located at the back of nose, tip of nose, columella, etc. The skin is thick and the tissue is special. Operation method and steps 1. Routine disinfection and towel laying expose the skin area behind the face and ears.

2. The design of nasal surgery should be based on Burget nasal aesthetic unit. If it is less than one unit, it should be expanded. If there is more than one unit, it should be reduced to one unit or expanded to two units.

3. Adults can locally invade anesthesia; Children should receive general anesthesia.

4. The skin around the defect should be trimmed neatly, the scar should be completely removed, the contracture should be fully released, and the displaced tissue should be reset.

5. Thoroughly stop bleeding wounds.

6. According to the size and shape of the defect, enlarge the cloth sample slightly, design the skin harvesting range at the cranial angle behind the ear, cut off the skin with fat, trim it into full-thickness skin graft for later use, and suture the subcutaneous tissue on both sides of the donor site in layers after separation.

7. The skin graft was transplanted to the wound surface of nasal defect, and the wound was sutured and pressure-bound.

8. After the wound behind the ear is cleaned, wrap one ear with gauze cotton pad, and cover the nasal skin graft area with gauze.