The nasal bones are an important part of the scaffolding that makes up the external nasal profile. The external nose protrudes from the center of the face and is highly susceptible to trauma resulting in nasal bone fracture. The upper part of the nasal bone is thick and narrow, which is stronger; the lower part is wide and thin, and lacks support, so the nasal bone fracture mostly involves the lower part of the nasal bone and collapse occurs. In severe cases, it is often accompanied by nasal septum fracture and obvious facial deformity. For nasal bone fracture, early treatment is required. For simple nasal bone fracture, if the nasal bone X-ray shows good alignment and there is no obvious deformity of the external nasal shape, it can be left untreated, and pressure on the external nose is contraindicated; if the external nose is skewed or collapsed obviously, it needs to be treated by nasal bone fracture repositioning surgery as soon as possible. Often, two or three hours after the nasal fracture, the external nasal swelling is obvious and the external nasal deformity cannot be seen, so reset is performed after the external nasal swelling subsides. The best time to reset the nasal bone fracture is within two hours after the swelling has not formed after the external nasal trauma; or after the swelling has subsided for about a week after the trauma. However, the surgery should not be performed more than 10 days after the trauma in order to avoid misalignment of the nasal bone and increase the difficulty of repositioning. For those with comminuted nasal bone fractures, the results of nasal bone repositioning may not be satisfactory and require later treatment with external rhinoplasty. With nasal bone fractures, secondary infections also need to be prevented.