Tongue fissures are a seemingly simple but headache-inducing condition for many patients. The abnormalities of the tongue’s manifestations not only affect the aesthetics, but also bring great psychological pressure to the patient, and many patients often worry that they are suffering from an incurable disease. In fact, tongue cracking is a symptom of mild tongue inflammation, which is considered by Chinese medicine to be caused by heat that injures the fluids, blood deficiency that does not moisten, or spleen deficiency that dampness soaks in. In the Yellow Emperor’s Classic of Internal Medicine, “The meridians. Tenth” states: “The pulse of the spleen’s foot Taiyin …… evens the tongue and spreads under the tongue” and “the pulse of the kidney’s foot Shaoyin …… holds the tongue. “. These are the two meridians in the Twelve Meridians that are most closely related to the tongue. The appearance of tongue fissures reflects the long-term low function of the spleen and kidneys. The spleen and stomach are the source of biochemistry of qi, blood and fluids. A long-term lack of biochemistry and fluids will not moisten the tongue well, just as the soil will be dry and cracked if it is not sufficiently irrigated by water. Long-term weakness of the spleen and stomach is like a company with long-term profitability that is not very good, “the kidney is the main collection”, the kidney is like the company’s deposits, which are bound to be insufficient. Tongue cracking indicates a long-term state of weak spleen and kidney function, if not treated in time, it is likely to develop into diabetes, hyperlipidemia, hypertension and other common modern diseases in the future.