The way to eat Yin Chen is to take a decoction of soup. Yin Chen is the dried above-ground parts of Artemisia annua and Artemisia capillaris of the genus Artemisia. It is bitter, pungent and slightly cold in nature, and belongs to the spleen, stomach, liver and gallbladder meridians. It has the effect of clearing dampness and heat, and relieving jaundice by inducing diuresis (clearing evil qi from the biliary tract and eliminating jaundice). It can be used in the treatment of jaundice with low urine output, dampness-warmth (warmth caused by feeling dampness-heat), summer dampness, wet sore itching and other diseases. The adverse reactions and contraindications of Yin Chen are not clear, but it should be noted that it should not be used in patients with spleen deficiency and cold stomach. The drug can be taken by decoction, in addition, it can also be decocted and smoked externally. If you need to use this medicine, it is recommended to go to a regular hospital for treatment under the guidance of a professional physician.