Sudden swelling of the chin, on the one hand, should consider whether it is due to contact with certain allergens, or by mosquito bites resulting in an allergic reaction to the chin tissue, causing tissue congestion, edema and symptoms. In this case, it is recommended to take anti-allergy drugs to relieve the symptoms, such as cetirizine, loratadine and vitamin C. On the other hand, we should consider whether the inflammation is caused by infection in the soft tissues of the chin, such as folliculitis, acne, or inflammation in the soft tissues around the chin, such as gingivitis, and whether the swelling of the chin is caused by inflammation in the lymph nodes of the chin. The above causes are recommended to consult a doctor in a timely manner to reduce inflammation and swelling under the guidance of a professional doctor.