Wulong San is used in the method of warm water, once a bag, twice a day, its efficacy is to strengthen the spleen and kidney, blood, wind, etc., the main treatment of spleen and kidney insufficiency, blood stasis blockage caused by vitiligo. Wulong San is a brown to brown powder, composed of astragalus, red peony, tribulus terrestris, dillon, peach kernel and so on. This product has the efficacy of promoting blood circulation, dispelling wind, harmonizing Yingwei (relieving wind evil, correcting Yingwei disharmony), strengthening the spleen and benefiting the kidney. It is used for vitiligo caused by the disharmony of Ying and Wei (body does not have fever but sweats from time to time, and sweats from time to time), insufficiency of the spleen and kidney, and blood stasis and obstruction of the collaterals. The adverse reactions of Wulongsan are not yet clear, contraindication is pregnant women should not take; precautions are not yet clear. If this product is used with other drugs, drug-drug interactions may occur. If there is a need to use this product, it should be applied under the guidance of a traditional Chinese medicine practitioner, and should not be taken on its own to avoid adverse consequences.