Yin Chen is not Artemisia absinthium, the two drug source, efficacy, main treatment of different diseases, such as Yin Chen and Artemisia absinthium have the effect of clearing dampness and heat, but Artemisia absinthium also has cool blood to stop bleeding (so that the blood cool and moist, to prevent bleeding), Yin Chen can also be diuretic to reduce jaundice (dredge the biliary tract of the evil, eliminating jaundice). It should be used in accordance with medical advice. 1. Drug source: Yin Chen is the dried above-ground part of Artemisia annua or Artemisia japonica, and Artemisia alba is the whole grass of Artemisia grandis. 2. Indications: Artemisia capillaris is used for dampness and warmth (warm diseases caused by feeling dampness and heat), summer dampness, jaundice, urination, wet sores and itching. Artemisia absinthium is used for lung-heat coughing, sore throat, damp-heat jaundice, hematemesis and vomiting of blood, hot diarrhea, gonorrhea, bleeding from wounds, rheumatism and paralysis, scabies and malignant sores. Blood accumulation and yellowing (yellow body, hardness and fullness of the abdomen, black stools, etc.), blood deficiency and atrophy of yellow people should not be used with caution Yin Chen. Contraindications and adverse effects of Artemisia annua are not clear.