Drinking Artemisia annua water for a long time has the effect of clearing heat and cooling the blood, etc. If you drink the water for brewing, you may not be able to completely analyze the active ingredients of the drug, plus only a single flavor of the drug, and its therapeutic effect is limited. Artemisia annua is the whole grass of the plant Artemisia annua, family Asteraceae. It has the effects of 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 used in the treatment of lung-heat cough and asthma, sore throat, damp-heat jaundice, hot diarrhea, gonorrhea, rheumatic paralysis, vomiting blood and hemoptysis, traumatic bleeding, scabies and malignant sores. If the patient has a need for medication, should be applied by a professional physician after clear identification of the disease, blind use of drugs can lead to adverse consequences.