Yin Chen infusion fresh or dried can be used, dry is convenient to save, fresh is only available in season. However, herbal infusion should not be used as a substitute for medication to treat diseases. Yin Chen is a traditional Chinese medicine, slightly cold in nature, bitter and pungent in flavor. It has the effect of clearing dampness and heat, relieving bile and jaundice (dredging the biliary tract of evil, eliminating jaundice). Clinical main treatment for jaundice and urination, wet sores, itching, dampness and warmth (feeling dampness and heat caused by warm disease) summer dampness. Adverse effects of Yin Chen can cause nausea and vomiting when taken in large quantities. Contraindications are not clear. Caution is advised for those who have blood accumulation and yellowing, and those who have blood deficiency and yellowing. Yin Chen can be taken internally, can be used externally, external use is to take the appropriate amount of decoction of this product fumigation. It can also be brewed and drunk, but the active ingredients of Chinese medicine brewed in water are limited to be analyzed, and it can’t replace the medication to treat the disease. After the discomfort should be timely medical treatment, under the guidance of the doctor to choose the drug treatment, not self-medication.