Tongue pain for a year has not yet healed should go to the hospital in time to clarify the diagnosis, and the appropriate treatment. Causes of long-term tongue pain include lingual inflammation, burning mouth syndrome, leucosis, etc.. 1. Tongue inflammation: Tongue inflammation is mainly manifested in the tongue red, swollen, hot and painful, easy to form ulcers and erosion in the mouth, if not dealt with, it will be a long-term tongue pain, should be actively treated under the guidance of the doctor reasonable use of antibiotics to control inflammation, such as metronidazole, adjusting the nutrition and diet, and replenish the adequate amount of B vitamins. 2. Burning mouth syndrome: refers to the occurrence of oral mucosa, to burn-like pain sensation as the main manifestation of a group of symptoms, often not accompanied by obvious clinical signs of damage, there is no characteristic histological changes. Tongue as the main part of the disease, clinical symptomatic treatment to eliminate local irritants, pain can be local application of pain medication. 3. Leukemia: leukemia is a common symptom of oral ulcers, vulvar ulcers, etc., is an autoimmune disease, almost 100% of patients have recurrent, painful oral ulcers, the specific cause of the disease is not known, there is no effective cure, the purpose of the treatment is to alleviate the symptoms. Tongue pain for a year is still not well there may also be other causes, it is recommended to consult a doctor in time to clarify the cause of the disease, and for the cause of the treatment.