If a tooth accidentally bites the tongue, you need to give symptomatic treatment according to the situation, including local medication, attention to diet and grinding teeth, etc., as follows: 1, medication: if the tip of the tongue has caused ulceration and redness, swelling, pain, you can spray watermelon cream spray, open throat sword spray, or the use of rehabilitation of new liquid mouthwash to rinse the mouth. This kind of drugs can promote the healing of the tongue tip area wound, relieve pain. 2, diet: in the diet should pay special attention to avoid eating spicy and irritating food and food too high temperature, also do not recommend eating food too hard texture, to light, warm and soft food. 3, adjust the grinding teeth: if the teeth often bite the tongue, it means that there are teeth alignment is not neat or relatively sharp tooth tip. In this case, go to the hospital to adjust the grinding and adjustment of the teeth to prevent the occurrence of regular traumatic ulcers on the tongue.