Mugwort root is the root of mugwort, bitter, pungent and warm, it belongs to the liver, spleen and kidney meridians, it has the effect of warming the menstrual channels to stop bleeding, dispersing cold to relieve pain and activating blood circulation to remove blood stasis, it can treat bleeding from menorrhagia. It is pungent, warm and disperses cold, has the effect of warming the meridians, and can warm the menstrual channels to stop bleeding, treat bleeding disorders, deficiency cold bleeding, and can be combined with Panax ginseng and angelica. Mugwort root has the effect of warming the middle and dispersing cold to stop pain, and can treat abdominal pain and cold pain caused by deficiency cold in the spleen and stomach, and can be taken with a decoction of mugwort root in water, or with dried ginger and galangal. This product can regulate menstruation, warming the menstrual channels, expelling cold dampness and relieving cold pain. It can treat irregular menstruation caused by deficiency cold in the lower jiao, dysmenorrhea and leucorrhea with no odor, and can be combined with Xiang Fu, Chuan Xiong and Angelica sinensis. Mugwort root has the effect of invigorating blood and resolving silt. For pain caused by bruises, it can be pounded fresh and applied externally. The use of mugwort root is prohibited for pregnant women.