Redness, swelling and pain on the side of the tongue can be treated by removing the irritating factors, adjusting food intake, using anti-inflammatory drugs to promote healing, surgical treatment, etc. It is recommended to consult a doctor for examination and treatment. 1. Redness, swelling and pain on the side of the tongue may be caused by the irritation of the mucosa of the tongue by stumps and crowns, so these local irritating factors should be removed first before treatment. 2. After removing the irritating factors, the diet should be adjusted, do not eat spicy and stimulating food, more vitamin food. 3. Use local anti-inflammatory drugs to promote healing, such as: chlorhexidine gargle, watermelon cream, hormone drugs. 4. If the redness, swelling and pain on the side of the tongue are cysts or tumors, surgery is needed. It is recommended to consult a doctor for examination and treatment of symptoms, and use medication under the guidance of a physician.