Tips for treating a sore tongue include drinking cool beverages to soothe the tongue, avoiding spicy foods and following proper dental hygiene, according to National Institute of Dental and Craniofacial Research. Proper dental hygiene includes brushing, flossing and using a mouthwash on a daily basis.
Another way to help soothe a sore tongue is to determine what caused the sore tongue and eliminate that problem. A sore tongue can be caused by a disorder such as burning mouth syndrome, canker sores, anemia, diabetes or a traumatic injury such as accidentally biting the tongue, states Healthline. If the cause requires another treatment, such as diabetes, then the person must see a medical professional to correct it.