Cracked tongue, also known as furrowed tongue, is now the back of the tongue, the front half of the tongue and the tongue tip on both sides of the edge of the width of the cracks and gaps of varying depths, both men and women can occur, the incidence of 5-10%, about 0.5% to 1% of the healthy population with congenital cracked tongue. Adolescents or middle-aged and elderly people can be affected, young patients are more common, the symptoms are relatively light, with age, physical growth, cracks can expand and obvious, young people sometimes often exist at the same time with the map tongue. Superficial fissures on the tongue are mainly due to the atrophy of the tongue mucosa, so that the longitudinal or transverse lines of the tongue are formed through the surface, while deep fissures on the tongue are more serious atrophic lesions of the tongue, so that the epithelial layer of the tongue loses its normal structure, and some of the papillae become flattened and fused, while some of them are atrophied and fractured to form fissures, under which thickened scars and contractions can be seen. The tongue is thickly white and unevenly distributed, in some cases there is even no tongue coating, the tongue is bright red, and there are many deep furrowed cracks on the surface of the tongue, the cracks are often in various shapes such as leafy vein, cerebral gyrus and unshaped herringbone, Kawasaki and tree-fork. In general, there is no discomfort, usually no painful symptoms, only a tingling sensation when eating spicy and stimulating food, the disease is generally not malignant. There are generally two types of cracked tongue, one is known as a leafy tongue, in the center of the back of the tongue there is a longitudinal fissure with a deeper front and back, and on both sides there are many laterally arranged side branches of the more regular secondary sulcus, like a leafy vein; one is known as a brain tongue, the back of the tongue can be seen as the brain sulcus-like fissure, meandering curved in the back of the tongue, similar to the back of the brain, the tongue body is slightly larger, both sides of the tongue edge can appear tooth marks. Patients with few and shallow fissures generally have no obvious symptoms, the tongue is soft and freely moving, and the sense of taste is normal; while those with deep fissures, the grooves are not covered by tongue moss, and the grooves are prone to retain food residues and microorganisms and cause inflammation, edema and irritation pain of the tongue; if repeatedly infected and inflamed, the tongue body can gradually increase in size and thickness, and tooth marks can appear on the tongue edge; long-term tongue fissures may also lead to nutritional imbalance of the tongue, and atrophy of the tongue surface The tongue surface may become atrophied, smooth and small. Cracked tongue causes: 1, genetic factors related to: mostly congenital cracked tongue, the cause of this part of the patient’s tongue crack is not well understood, usually considered to be a developmental deformity of the tongue. 2, chronic wasting disease: clinically seen in fever, dehydration resulting in electrolyte disorders, diabetes, chronic enteritis, hepatic sclerosis and other patients with tongue image. 3, patients with nutritional deficiency, with vitamin deficiency is the majority. 4, Chinese medicine has said that from heat diseases: heart fire burning, Yin deficiency fever, heat poison fumigation, heat and fluid injury, gastric fluid burning, Ming deficiency fire, blood dry liquid dry, evil into the camp blood, stomach Yin deficiency, phlegm heat condensation, essence and blood deficiency or Yin and fluid depletion and other factors. 5, mental factors are also related. 6, geographical factors: geographical environment, food varieties, nutrients and other conditions change may also gradually form the tongue crack. 7, oral factors: poor oral hygiene, the presence of a large number of dental calculus, food debris, root remnants, crown remnants. Cracked tongue treatment: there is no more effective method in the treatment 1, try to avoid spicy and stimulating food, Chinese medicine treatment is appropriate to clear the heart and remove heat, spleen and dispel dampness, produce fluid and blood, nourish Yin and nourish fluid. 2, balanced diet, to ensure the supply of vitamins, supplement vitamin B1, vitamin B2 and other drugs. 3.Patients should maintain regular habits, adjust the normal state of mind, and check the corresponding situation in the oral cavity in a timely manner. 4, relatively shallow cracks generally do not require treatment, treatment of the corresponding oral diseases, periodontal cleaning, extraction of the residual roots and crowns without retention value. 5, deep cracks, heavy symptoms can be considered for surgery to remove the crack and suture off the cleavage. 6.It is very important to keep oral hygiene, rinse your mouth in time after meals, and use anti-inflammatory mouthwash appropriately to clean the food debris and bacteria in the tongue cleavage, so that no food will accumulate in the cleavage, otherwise, repeated infections will continue to deepen the cleavage.