The use of Ruyi Jinhuang San is based on external application. Applied externally to the affected area, it can better clear heat and detoxify (remove heat and toxicity from the body) to reduce swelling. The main composition of Ruyi Jinhuang San includes Atractylodes macrocephala, Rhubarb, Cyperus rotundus, smallpox pollen and so on, which is a kind of commonly used Chinese patent medicine for external use. It has the functions of clearing heat and removing toxins (removing heat and toxins from the body), subduing swelling and relieving pain (eliminating swelling and pain), and is often used in the treatment of all kinds of boils, sores, and other infectious diseases of the skin, with good anti-inflammatory effects. The use of Ruyi Jinhuang San is often used in tea, honey, wine, vinegar, etc., on the affected area, depending on the condition, 2-3 times a day, or can be several times, and then covered with a bandage, gauze, etc. fixed. Ruyi Jinhuang San is an external medicine, prohibiting internal use. When applying it externally, care should also be taken to avoid broken skin, so as to prevent the powder from coming into contact with broken skin and causing secondary infections. The drug allergic people are also recommended to use with caution, so as not to cause adverse reactions; during the use of the drug, you should also avoid spicy stimulation of greasy food, as well as fish and shrimp and other seafood and other hairy things, which may affect the effect and so on. Chinese medicine needs to be used under the guidance of a doctor to avoid the adverse consequences of self-application.