Thick tongue coating with teeth marks may be caused by Spleen Deficiency and Dampness Difficulty (weakness of the Spleen and retention of Dampness), but the exact cause needs to be decided in conjunction with the patient’s other symptoms. In addition to thick tongue coating with teeth marks, patients with spleen deficiency and dampness may also have reduced diet, fullness in the stomach and epigastric region, loose stools, even nausea and desire to vomit, thirst for hot beverages, tiredness of the limbs, or even swelling, etc. The patient may be treated with Ginseng Ling Bai Zhu San. It can be treated with Ginseng Ling Bai Zhu San. Ginseng, Poria, Atractylodes Macrocephalae (fried), Chinese yam, white lentil (fried), lotus seed and other components. It has the effect of tonifying the spleen and stomach and benefiting the lungs and qi. It is used in treating loose stools caused by weakness of the spleen and stomach, shortness of breath and coughing, tiredness and fatigue. If the symptom of thick tongue coating with teeth marks does not relieve for a long time or is accompanied by other discomforts, consult a doctor in time to find out the cause and carry out targeted treatment.