Chuanxiong Ligusticum in water can invigorate blood circulation, remove blood stasis, move qi and relieve pain. It is a qi medicine in the blood and is used to treat chest pain and heartache, and is often used together with Salvia, Cinnamomum and Sandalwood. Chuanxiong is an important gynecological herb that invigorates the blood and regulates menstruation, and is used to treat a variety of gynecological and obstetrical disorders, often in combination with red peony and peach kernel. Chuanxiong can also treat headache and rheumatic paralysis, and is an important medicine for headache, as it can move the head upward, dispel wind and relieve pain, and can be used for headache caused by wind-cold, wind-heat, wind-dampness, blood deficiency and blood stasis. Therefore, ancient medical practitioners said that Chuanxiong should be used for headaches, but caution should be exercised in cases of Yin deficiency and fire, excessive sweating, heat and bleeding without blood stasis, and in pregnant women.