If the patient himself does not have other symptoms, treatment is not recommended. It is likely that the blood vessel travels closer to the tongue mucosa, and at this time, because everyone has a different constitution, the blood vessel travels differently and the depth is not the same, so the patient may feel that his sublingual blood vessels are blue. At this time, because the blood flow in the tongue is very rich, the reason why it is blue is because it is a vein inside, and if the patient takes some treatment rashly, it is likely to lead to bloodstream infection. If patients are not sure, they can go to maxillofacial surgery for relevant examination to rule out the possibility of hemangioma. Hemangioma does not occur well on the side of the tongue, and even if it does, it is a blood vessel on the abdomen of the tongue, not the back of the tongue. Hemangioma mainly occurs in the lip, and this time it is completely different from other parts of the lip tissue, and the patient can also judge it at a glance.