1. Coagulation function should be checked routinely before operation. If the nose is deformed and infected locally due to the disease, the disease should be treated first to eliminate the pathogen.

2. In order to prevent the nose from being deformed after repair, it is best to perform surgery after the patient is an adult, because the repair is too early and the face develops.

3. According to the shape and size of the bridge of the nose, place a suitable filler, then suture the wound and fix the nose shape. Penicillin should be injected after operation to prevent infection.

4, intraoperative sterilization must be strict, if there is infection, the filler will be necrotic.

5. Before placing the filler, attention should be paid to the separation level, cavity size and symmetry. The cavity formed after separation should be suitable for filling and the compactness should be appropriate.

6. The skin and soft tissue of patients with severe nasal collapse are sunken upwards. In this case, the operation must be performed in stages. First separate the nose, move it to the normal position, and then implant the filler.