The reduction principle of nasal bone fracture is early reduction, because in the early stage of nasal bone fracture, nasal bone can be easily reduced, and then it can be wrapped, fixed and protected by reducer. However, if the fracture lasts for a long time, fibrous tissue hyperplasia and abnormal healing will occur in the nasal bone, and it will be more difficult to reduce it. Because nasal bone fracture can be divided into displaced nasal bone fracture and non-displaced nasal bone fracture, the treatment of nasal bone fracture should also be divided into two aspects: non-displaced nasal bone fracture and displaced nasal bone fracture; Non-displaced nasal bone fracture has little effect on patients, and generally only needs to stop bleeding and reduce swelling; Displaced nasal bone fracture because the nasal bone has been displaced, it is necessary to reset the displaced nasal bone. There are two reduction methods: closed reduction and open reduction. Closed reduction method is to restore the displaced nasal bone to its original position with nasal bone reduction forceps after determining the position of nasal bone fracture. When the closed reduction method cannot be used, the open reduction rule is adopted. It is a method to open the skin of the alar from the outside and put a support in order to achieve the effect of nasal bone reduction. First, check a nasal bone CT to see the nasal bone fracture. General routine examination of CT, because the nasal bone lateral film is less helpful for treatment. After CT, the fractures on both sides of the nasal bone can be checked, so that the fracture can be diagnosed. The nasal bone fracture should be treated within 2-3 hours after trauma, when the swelling has not yet formed, which generally does not exceed 14 days to avoid abnormal healing. Different treatment methods should be adopted for different types of closed fractures, and dislocated fractures do not need reduction. Dislocated fractures can be manually reset inside and outside the nose under nasal anesthesia. Note that when entering the nasal cavity, the reducer should not exceed the connecting line between the two inner canthus to avoid damaging the sieve plate.