Siwu Decoction is a classical prescription in Lin Taoist's Xianshoulishangxuduanmifang,which is composed of four traditional Chinese medicines: Angelica sinensis (Oliv.) Diels,Ligusticum chuanxiong Hort.,Cynanchum otophyllum Schneid. and Rehmanniae radix preparata. It has been widely applied in clinic and has a good value. It mainly has Huoxue and Buxue effects,which have the obvious clinical effect on Xuexu syndrome,Xuexu syndrome after radiotherapy and chemotherapy,aplastic anemia,Xuyu syndrome,the facture,the postoperative bleeding,the irregular menstruation,the functional uterine bleeding,...