The common causes of a swollen face include sebaceous cysts, boils, and periapical inflammation, which can be treated with surgery, medication, and other measures. 1. Sebaceous cysts: blockage of the sebaceous gland ducts of the hair follicles can cause secretions not to be easily discharged, and the formation of cystic swellings, which may lead to the growth of a hard bag on the face swollen face. It can be treated by surgical removal of the cystic swelling. 2. Boils: Suppurative infections of the deep soft tissues of the hair follicles may also lead to a swollen face. If the skin breaks down and the pus is discharged, it will usually heal on its own; if it does not heal on its own, erythromycin ointment and mupirocin ointment can be used externally; if there is a lot of pus that is not easy to be discharged or if it is recurrent, it can be incised and drained through surgery. 3. apical periodontitis: the root of the tooth as well as the surrounding tissue suppurative infection, may also lead to a hard bag on the face swollen face, can be discharged through endodontic treatment of purulent secretions, with metronidazole, ornidazole and other antibiotics anti-infective treatment. There are many possible reasons for the swelling of the face, it is recommended to go to the hospital for examination, to clarify the cause of the disease, and follow the doctor’s instructions for treatment. The above drugs need to be used in accordance with medical advice.