Chickenpox is a contagious disease that is considered by Chinese medicine to be an external infection of epidemic and poisonous evil. It is mainly classified into two types of illnesses, namely, the evil injury to the lung and the lung guard, and the poisonous incidence of the Qi camp. The symptoms of chicken pox are mild, except for the rash, the body temperature is not too high, and the fever is not obvious, accompanied by sneezing, runny nose, cough, cold, headache and other symptoms. If the chickenpox is severe, the body temperature rises higher, and even has a more obvious febrile appearance, with red face and red eyes, the body temperature cannot be easily reduced to normal by antipyretic drugs, and even the rash of chickenpox has bleeding manifestations, this is a severe disease, and the diagnosis should belong to the evidence of evil incandescent qi shadow. The treatment can be based on different prescriptions according to the type of symptoms. If the evil hurts the lung and guard, you can choose Yin Qiao San, and if the poison burns the qi camp, you need to choose Qing Gastric Detoxification Tang. The formula of Clear Stomach and Detoxification Tang contains drugs to clear heat such as Scutellaria baicalensis, Huanglian and gypsum, which are still relatively strong in clearing heat, and can also be appropriately added to cool the blood with drugs such as Comfrey and Gardenia.