The mandible belongs to the Department of Dentistry, and diseases such as jaw fracture and jaw osteomyelitis require a visit to the Department of Dentistry or the Department of Five Organs. Jaw fractures are divided into open fractures and closed fractures. Mandibular fractures can be treated by manual repositioning, traction repositioning, and surgical repositioning, etc. Postoperative fixation is required for 4-8 weeks, and the duration of fixation is related to the patient’s age, the patient’s physical condition, and the severity of the patient’s condition. Osteomyelitis of the jaw is also divided into acute osteomyelitis of the jaw and chronic osteomyelitis of the jaw, which is generally odontogenic, injury-infected and hematogenic, and requires timely treatment of pericoronitis and other odontogenic infections to prevent osteomyelitis of the jaw. Acute jaw osteomyelitis requires infection control and timely extraction of the original tooth, while chronic jaw osteomyelitis requires complete removal of the lesion and removal of the dead bone, so these dispositions require a visit to the dentist.