Cracks in the anterior part of the tongue is called furrowed tongue, the etiology of which is still unclear, and may be related to systemic factors, tongue developmental abnormalities, etc. The details are as follows. 1. Systemic factors: such as chronic bronchitis, hepatitis, cholecystitis, tuberculosis, etc., which may lead to nutritional disorders, tongue muscle atrophy, mucosal relaxation, and the appearance of grooved tongue. 2. Abnormal tongue development: the tongue tie is too short, which will affect the activities of tongue, such as tongue forward extension and upward curling activities, in order to adapt to the needs of physiological functions, the tongue tie on both sides of the tip of the tongue will adapt to the enlargement of the tissue, resulting in the appearance of grooves on the tongue anterior region. 3. Genetic factors: if the patient has a family history of this disease, the chances of grooved tongue will be greater. 4. Infectious factors: If the patient is infected by viruses, bacteria, fungi and other pathogenic bacteria, the tongue may be enlarged due to prolonged infection, resulting in changes in the tongue shape and deepening of the grooves, which will lead to the appearance of furrowed tongue. There may also be other factors leading to furrowed tongue, it is recommended to go to the hospital in time to receive regular treatment.