Mugwort water generally refers to the water boiled with mugwort leaves, urticaria, belongs to the category of Chinese medicine “addiction rash”, mugwort leaves do not have the effect of treating urticaria, so mugwort water can not treat urticaria. Mugwort leaves, bitter flavor, pungent, warm; a small poison. Attributed to the liver, spleen, kidney meridian. It has the effect of warming menstruation and stopping bleeding, dispersing cold and relieving pain. It is used in treating hematemesis, epistaxis, metrorrhagia, excessive menstruation, fetal leakage (small amount of vaginal bleeding in early pregnancy), hemorrhage, cold pain in the lower abdomen, irregular menstrual cycles, and infertility due to coldness in the uterus. If the use of moxa leaves for the treatment of women’s cold and deficiency leakage, pregnancy blood, often with Colla Corii Asini, Angelica Sinensis, etc. to warm menstruation dispersal of cold, nourish the blood to stop bleeding; if the combination of qi deficiency does not regulate the bleeding, can be added astragalus, Codonopsis, atractylodes, etc. in order to benefit qi regulate the blood (by way of replenishing the qi to prevent bleeding); if the kidney deficiency of fetal movement restlessness, can be added with cuscuta, parasol, and sequestrum to nourish blood, benefit the kidney and stabilize the fetus. It should be noted that it should be used with caution in cases of Yin deficiency and Blood heat. If there is any physical discomfort, it is recommended to go to the hospital for treatment promptly.