Mouth ulcers generally do not cause maxillofacial swelling. Maxillofacial swelling, usually caused by infection, allergic diseases, trauma and other reasons, clinical manifestations of limited or widespread swelling. Treatment includes general treatment, medication, physical therapy and so on. 1. Infectious swelling such as acute pericoronitis: more or less due to the growth of wisdom teeth in the process of gingival tissue inflammation caused by the first anti-infective treatment, such as the use of drugs, amoxicillin, etc., followed by local application of iodine glycerin on the pericoronary anti-inflammatory, serious cases need to remove the wisdom teeth. 2. allergic reaction swelling such as atopic dermatitis: daily history of allergies, skin contact with some kind of allergic substances, skin flushing, rapid edema. To stay away from allergens, severe cases need to take anti-allergy drugs such as loratadine for treatment. 3. Traumatic swelling, such as soft tissue contusion, such patients have a history of trauma, localized petechiae and hematomas after injury. In 24 hours after the injury to give cold compresses, rest, 24 hours later can be given hot compresses and other methods of recovery treatment. There are many other causes of maxillofacial swelling, such as acute alveolar abscess, facial fracture, angioneurotic edema, etc. Therefore, when maxillofacial swelling occurs, it is necessary to consult a doctor in time, complete the relevant examinations, and have a specialist judge the specific cause and administer the corresponding therapeutic medication. Avoid blind self-medication.