Blood has the function of moistening and nourishing, if the blood is deficient and the fluid is deficient, the loss of moisturizing and dryness, the skin loses nourishment and generates wind, which can be manifested as dry skin, itching, flaking accompanied by limb tremor, numbness and other symptoms. Blood dryness generates wind (blood deficiency, skin loss of nourishment leads to wind) skin itch can be treated by traditional Chinese medicine, acupuncture and other treatments, so as to achieve the purpose of nourishing blood and nourishing yin, eliminating wind to stop itching (by eliminating the wind that invades the surface to stop itching). Its adverse reactions and contraindications are still unclear, need to use this product under the guidance of a doctor. 2. Acupuncture: Acupuncture can be used to relieve itching by local circumcision or bloodletting in order to activate blood circulation and remove blood stasis (promoting blood circulation and eliminating blood stasis in the body), and clearing heat and cooling the blood (relieving blood heat by clearing heat). Acupuncture should be performed by a professional doctor and should not be self-administered to avoid risks. If itchy skin occurs due to dry blood and wind, it is recommended to go to the hospital and choose the appropriate method of treatment after the judgment of a professional physician, so as not to delay the condition.