At present, dampness has become a high-frequency word consulted by patients in the clinic, and there is a difference between internal dampness and external dampness. Patients with internal dampness tend to eat fatty, sweet and greasy foods, and are unable to transport and transform them due to spleen deficiency, which leads to phlegm and dampness; patients with external dampness may have external evil invade the body due to rain and humid living environment, which leads to the aggravation of dampness in the organism. Patients with heavy dampness often show symptoms such as physical and mental drowsiness, tiredness of the limbs, not thinking about eating and drinking, fat tongue, teeth marks on the side of the tongue, moist and slippery pulse, and the desire to defecate again after defecation, and their excrement is sticky.