The traditional Chinese medicine name for mugwort leaves is Ai Ye, which is effective in dispersing cold and relieving pain (relieving pain by removing cold from the body), warming the menstruation and stopping bleeding (warming the body’s meridians and stopping bleeding in the body), etc. It is used for treating vomiting of blood, epistaxis, disintegration of the menstrual cycle (menstruation that is excessively heavy or dribbling), and excessive menstruation. Mugwort leaf is bitter, pungent and warm in nature; it is slightly poisonous. It belongs to the liver, spleen and kidney meridians. It has the efficacy of warming menstruation, stopping bleeding, dispersing cold and relieving pain; it is used externally to dispel dampness and relieve itching. Clinically, it is mainly used in treating hematemesis, epistaxis, metrorrhagia, excessive menstruation, fetal leakage (small amount of vaginal bleeding in early pregnancy), hematemesis, cold pain in the abdomen, cold menstruation, infertility and so on; and externally for treating itching of the skin. Vinegar moxa charcoal warms menstruation and stops bleeding, and is used for bleeding due to deficiency and cold. It should be noted that it should be used with caution in cases of Yin deficiency and Blood heat. Before using moxa leaves in medicine, it is necessary to have the guidance of a professional Chinese medicine practitioner to identify the symptoms and not to use it blindly.