Burning sensation of the tongue is not necessarily a precursor of cancer. In the case of impaired microcirculation, insufficient blood supply, and local venous congestion of the tongue, which affects the normal blood supply, the tongue may also be deprived of normal blood nourishment, and a burning sensation may occur. The burning sensation on the tongue may be a burning mouth syndrome, in which the patient’s tongue has the sensation of being burned by fire or boiling water, similar to a large amount of pepper sprinkled on the tongue, mostly at the root of the tongue. In addition to the painful, burning sensation, the patient may also have abnormal taste sensations, such as a bitter or metallic taste in the mouth. The burning sensation on the tongue for a long time may lead to loss of appetite and even weight loss, which may also affect the quality of sleep and cause emaciation after a long time. In the early stage of tongue cancer, there is usually no burning sensation on the tongue, and patients may only have thickening, white spots or small hard nodules on the mucous membrane of the lateral edge of the tongue, and as the disease progresses, patients may then have ulcers, erosion, pain or foreign bodies on the tongue. If you have a burning sensation on the tongue, you can go to the stomatology department of a regular hospital for an examination to clarify the cause of the disease and then treat it accordingly.