Gums swelling and pain on fire may be caused by gingivitis, pulpitis, periodontitis, etc., can be localized with medication rinsing, root canal treatment, taking medication and so on. There is no special contraindication to fruit, according to their own preferences can be selected. “Fire” is not a standardized medical term, after the fire gum swelling and pain is usually due to inflammation of the gums and symptoms caused by stimulation, such as common gingivitis, pulpitis, periodontitis and so on. Patients with gingivitis can use 3% hydrogen peroxide solution, saline, etc. to rinse the gums alternately to relieve the swelling and pain. Patients with pulpitis can undergo root canal therapy to fully clean the pulp cavity. Periodontitis requires periodontal treatment, and incision and drainage can also be performed if there is a periodontal abscess. Patients generally have no special requirements for fruits, and can consume them according to their own preferences. Some daily apples, bananas, cantaloupe, dragon fruits, mangosteen, pears, kiwi, grapefruit, etc. are all acceptable. It is recommended to rinse the mouth after consumption to keep the mouth clean and hygienic. It is recommended that the patient consult a doctor in time to clarify the cause of the disease and carry out appropriate treatment according to the cause of the disease.