A groove on the tip of the tongue is a symptom of grooved tongue, which is mainly caused by genetic factors, oral hygiene factors or infectious factors; it is recommended to consult a doctor for a clear diagnosis and symptomatic treatment. 1. Grooved tongue may be genetically related, if there is a family history, the baby has a greater chance of grooved tongue; if it does not affect pronunciation or aesthetics, etc., it can be temporarily observed, on the contrary, it is necessary to restore the normal shape of the tongue surgically. 2. Poor oral hygiene will produce a lot of food residues, which will stimulate the tongue tissue to appear furrow cracks and other symptoms; we must do a good job of oral care, keep the mouth clean, and clean up the food residues in the furrow in a timely manner. 3. Viral, bacterial or fungal infections can lead to inflammation and enlargement of the tongue, making its shape change and deepening of the furrow. Small children with a groove on the tip of the tongue may also be related to other causes, if the child is accompanied by abnormal symptoms, it is recommended to consult a doctor in a timely manner, in order to clarify the cause of the disease.