Jaw fracture surgery may cause occlusal muscle disorder, facial numbness, limited mouth opening and other sequelae. 1. Disorder of occlusal muscle: If the jaw fracture is not effectively controlled, the displacement of the fracture place will lead to disorder of the occlusal muscle, which will affect the normal mastication function of the patient, and it may also lead to the emergence of other oral diseases of the patient. 2. Facial numbness: The facial nerve is damaged due to the pulling of the chin nerve during jaw fracture surgery, resulting in numbness or abnormal sensation in the face. 3. Restriction of mouth opening: patients with jaw fracture have temporomandibular joint disorders during conservative treatment or surgery, resulting in restriction of mouth opening, which affects the normal eating of the patients. If the patient has the above sequelae, it is recommended to go to the hospital in time for a detailed examination of the jaw. Patients with more serious symptoms should undergo standardized treatment under the doctor’s advice.