In Chinese medicine theory, the human body dampness is mainly related to external dampness, spleen deficiency and dampness stagnation, eczema is due to the spleen loss of healthy transportation, dampness and heat generated internally, and also external wind evil caused. It can be treated with Dioscorea villosa and other treatments. 1. Dampness in Chinese medicine theory generally refers to dampness, dampness belongs to one of the six external evils, dampness from the external point of view, can come from the natural water moisture, such as rain, wading in the water or living in a humid environment for a long time, will lead to dampness through the surface of the invasion of human body, the formation of external dampness. In addition, for those who have a weak spleen and stomach, there will also be internal dampness, such as when the spleen’s function of transporting and transforming water and dampness is abnormal, there can be water and dampness within the stop (water and dampness stay in the body). 2. Eczema is due to dietary disorders, or over-eating spicy stimulation of meat and fish to move the wind, spleen and stomach damage, the spleen is not healthy, can not transport the water, dampness and heat, and the external wind, both inside and outside the two evils, wind, dampness, heat and evil impregnation of the skin caused by. You can choose the treatment of Dioscorea Dioscorea and Dampness Soup and so on. This formula has the effect of clearing heat and inducing dampness. The adverse reactions and contraindications of this formula are not clear. The above medications are recommended to be used under medical supervision. For patients with symptoms of dampness or eczema, it is recommended to consult a doctor in time and follow the doctor’s instructions for treatment, and not to use medication on their own to avoid delaying the condition.