A white circle on the tongue is a relatively common clinical symptom, called map tongue, also known as wandering tongue inflammation, the cause is not very clear, and may be related to infection or a lack of certain nutrients. The performance is generally corresponding to the middle of the tongue’s filiform papillae atrophy, and the surrounding hyperplasia performance, it is expressed as a layer of yellow-white circle around, and then around the inside of some atrophy of the papillae, most cases of tongue map tongue is no special symptoms, and does not require special treatment. However, if there is an obvious fungal infection, there may be painful situations, which can then be applied to some drugs. Map tongue is not uncommon in the clinic, if the appearance of people do not have to worry too much, as long as there is no special discomfort, map tongue observation is good, no special treatment.