Gums swollen half of the face is swollen may be periodontal abscess, acute periapical periodontitis, alveolar abscess and so on, the patient can be treated with medication, abscess drainage, root canal treatment and so on. Swelling of the gums is usually caused by inflammation of the gums, and half of the face is swollen, indicating that the swelling is more serious, may be caused by acute inflammation, such as common periodontal abscess, acute periapical inflammation, alveolar abscess, and so on. Patients can follow the doctor’s instructions to take metronidazole, ceftazidime, penicillin and other medications, at the same time with the use of hydrogen peroxide solution, chlorhexidine gargle rinse gingival sulcus, control of local inflammation. If the patient has a gingival abscess formation, the abscess needs to be incised to drain the pus and improve the symptoms. If the swelling and pain is caused by apical periodontitis, root canal treatment is usually necessary. It is recommended that patients seek timely medical treatment under the guidance of a doctor to relieve symptoms and control the progression of the disease as soon as possible.