After mandibular fracture surgery, there may be long-term complications, or what the common people call sequelae. The common ones are as follows: 1. Localized pain may remain. This kind of pain is mainly concentrated around the fracture end, which can be a vague pain or a very obvious soreness, and the attack tends to be persistent. This pain is often aggravated when it rains on a cloudy day or when the patient chews hard food.2. Localized swelling may remain, which is confined to the end of the fracture.3. Localized limitation of movement may exist. This limitation is often due to the patient feeling pain during activities and is afraid to continue activities, or due to the fracture of the mandible caused by the patient’s mouth opening is limited, or there is a poor occlusal relationship when biting, which leads to the limitation of activities. Delayed nerve damage may also occur after such surgery, such as inflammation due to surgery or trauma that irritates the facial nerve, potentially causing facial paralysis.