Heating wormwood with boiling water is closely related to people's life in China. On the occasion of Dragon Boat Festival, people always put wormwood at home to ward off evil spirits and soak withered plants in water to disinfect and relieve itching. Mothers often bathe or fumigate with wormwood water. Traditional medical theory holds that Folium Artemisiae Argyi has the functions of qi and blood, expelling cold and removing dampness, warming channels, stopping bleeding and preventing miscarriage. Modern experimental studies have proved that Artemisia argyi leaves have antibacterial and antiviral effects; Antiasthmatic, antitussive and expectorant effects; Hemostatic and anticoagulant effects; Sedative and antiallergic effects; Protect liver and gallbladder, etc. Wormwood can be used as recipes such as wormwood tea, wormwood soup and wormwood porridge to enhance the body's resistance to diseases.