Dampness in Chinese medicine is generally known as dampness, mostly due to humid climate, rain and water, living in a humid environment for a long time and other external factors or weakness of the spleen and stomach, fluid loss cloth cohesion and other internal factors. Dampness attacked the common body sleepy, skin eczema, sticky stools, thick and greasy tongue and other symptoms, commonly known as heavy dampness. Dampness is often caused by humid climate, rain and water or water work, long time in a humid environment, such as dampness caused by external; can also be seen in the dietary excesses, fat and sweet and thick flavors and other factors that make the diet stagnation, the spleen and stomach weakness, the spleen does not transport, fluid loss of dispersion, cohesion and birth of the internal dampness. Dampness can be caused by external infection, but also by internal growth, which should be analyzed by combining relevant symptoms and physical condition. If there are symptoms of dampness, it is recommended to consult the hospital in time, under the guidance of the doctor to identify the symptoms and treatments.