In pediatric clinics, it is common to see map tongue, which is called flower tongue and strawberry tongue by the people. Many parents give vitamin B2, or vitamin B12 supplementation, but the results are not obvious. In fact, the map tongue is a local manifestation of systemic allergies in the tongue, which is more difficult to treat. It is recommended to take oral Yu Ping Feng granules, and montelukast tablets, and you can drink five-flower tea. You can usually use light salt water to gently coat the tongue externally.