Mugwort is an alias of Ai Ye, a traditional Chinese medicine with the effects of warming the menstruation and dispersing cold. Mugwort is pungent, bitter, warm and slightly poisonous, and belongs to the liver, spleen and kidney meridians. It has the efficacy of warming menstruation and stopping bleeding (warming the human body’s meridians to stop bleeding in the body), dispersing cold and relieving pain (relieving pain by removing the cold in the body); it can also dispel dampness and relieve itching when used externally. Mugwort leaves can be used for hematemesis, epistaxis, metrorrhagia (excessive menstrual flow or more than a few drops), excessive menstruation, fetal leakage (small amount of vaginal bleeding in early pregnancy), hematemesis, hyperemesis, cold pain in the lower abdomen, menstrual cold, cold uterus and infertility; and externally to treat itching of the skin. Mugwort is warm in nature and is prone to injure fluid, so it should be taken with caution for people with deficiency of yin and blood heat. Ai Ye as a traditional Chinese medicine, should be used under the guidance of a doctor, can not be used without authorization, so as not to cause harm to the body. If discomfort occurs, you should go to the hospital in time.