Artemisia absinthium is effective in clearing heat and dampness (removing heat and dampness from the body), cooling blood and stopping bleeding (cooling and moistening the blood to prevent bleeding). It is recommended to take the decoction under the guidance of a doctor. Clinically, Artemisia annua is mainly used for the treatment of lung-heat cough and asthma, sore throat, damp-heat jaundice, hot diarrhea, gonorrhea, rheumatism and paralysis, vomiting blood and hemoptysis, bleeding from wounds and so on. Usage of Artemisia annua is usually taken internally: decoction of soup; or pounded juice; or minced. The adverse reactions and contraindications of Artemisia annua are still unclear, during the period of taking the diet should be light, avoid smoking, alcohol and spicy, cold, greasy food. If the patient has any discomfort, please go to the regular medical institutions; if you need to use Artemisia annua, must be used under the guidance of a professional doctor.