Cracks in the tongue can be called tongue fissures. In the case of congenital tongue fissures, treatment is usually not needed, while pathologic tongue fissures are mostly related to yin deficiency, insufficient fluids, and yang-ming dryness and heat. It can be treated by taking medicines that nourish yin and generate fluids and medicines that clear away heat and diarrhea. 1. Medicines for nourishing yin and generating fluids: they are mostly used for cracked tongue without moss caused by yin deficiency and fluid deficiency. Common proprietary Chinese medicines include Tianmai Xieyao Tablets and Shenmai Granules. The adverse reactions and contraindications of Tianmai Xieyao Tablet are not clear yet. Among them, it is not advisable to take quinquefoil, wulingzhi, soap pods or their preparations at the same time when taking ginseng mai granules, or drink tea and eat radish, so as to avoid affecting the therapeutic effect. People with weak spleen and stomach, vomiting and diarrhea, abdominal distension, loose stools, cough and phlegm should be cautious. 2. Heat-clearing and cathartic medicine: It is mostly used for symptoms such as cracked tongue and yellowish moss caused by actual heat in Yangming. Common proprietary Chinese medicines are compound aloe vera capsule, taking this product may appear abdominal pain, diarrhea and other adverse reactions, pregnant women are prohibited. Because of the presence or absence of moss and specific moss color for treatment, it is recommended that patients under the guidance of a doctor to choose the appropriate medication according to the symptoms, do not blindly take medication, so as not to delay the condition of the wrong medicine.