Mugwort boiled water bath mainly has the effect of eliminating dampness and relieving itching. Mugwort as a traditional Chinese medicine when used, its medicinal parts for the leaves of mugwort, medicinal source for the dried leaves of the plant Ai, family Asteraceae, its flavor is bitter, pungent, warm, with a small poison, into the spleen, liver, kidney meridian. When used externally, it can be pounded, decocted and smoked, with the efficacy of eliminating dampness and relieving itching, killing insects, and can be used to treat pruritus, such as eczema, insect bites and other causes of itching. In addition, mugwort leaves can also be taken internally, when used internally, it has the effect of warming menstruation and stopping bleeding (warming the human body’s meridians, stopping bleeding in the body), dispersing cold and relieving pain (relieving pain by removing the body’s coldness), which can be used for vomiting blood, epistaxis, metrorrhagia (excessive menstruation or more than a few drops), foetal leakage (small amount of bleeding from the vagina in the early stage of pregnancy), hyperemia, cold pain in the oligoastrointestinal region (the abdomen), menstrual cold and incompatibility, and cold uterus and infertility, and other diseases. It should be used with caution for those with Yin deficiency and blood heat and those with blood loss disorders. When using moxa, it should be used under the guidance of a professional Chinese medicine practitioner after identification, and if there is any discomfort after using the medicine, one should consult a doctor promptly.