When young children have ulcers on their tongues, the following treatment measures can be taken: 1, adjust and grind the sharp edges of the newly erupted mandibular milk incisors to prevent friction on the mucous membrane of the tongue.2, when shallow caries cavities are formed in the milk teeth, composite resin can be used directly for filling. For deeper cavities, the thin-walled weak tip should also be trimmed, and then glass ionomer cementum should be applied to fill the cavity.3. Remove the residual roots and crowns as soon as possible, as well as the tooth fragments adhering near the gums.4. Correct the child’s bad habit of gnawing and biting the fingers and toys, etc..5. When the tongue tie of a toddler is too short, the tie can be repaired under local anesthesia.6. Apply saline to rinse the tongue ulcer, and apply a 1% gentian violet or blue solution on its surface to promote anti-inflammation, and take care not to use the tongue tie. To promote anti-inflammatory, pay attention not to use corrosive drugs.