Siwu decoction comes from Hejiju Prescription, and its prescription is: Radix Rehmanniae Preparata 45g, Radix Paeoniae Alba 45g, Radix Angelicae Sinensis 45g and Rhizoma Chuanxiong 30g, which has the function of enriching and regulating blood. This prescription is mainly used for treating blood deficiency and blood stasis. For deficiency of blood, qi stagnation and blood stasis, prenatal and postpartum diseases, this recipe can be used on the basis of addition and subtraction. This recipe adds Sijunzi Decoction named Bazhen Decoction to treat deficiency of both qi and blood; Cinnamon and aconite root are added, which is called Shiquan Dabu Decoction, and it is used to treat people with deficiency of both qi and blood, yang deficiency and cold. If livestock have blood deficiency and fever, Scutellaria baicalensis Georgi and Cortex Moutan can be added, and rehmannia glutinosa can be used as a living place; If the fetal movement is uneasy during pregnancy, add Folium Artemisiae Argyi and Colla Corii Asini; For abdominal pain due to blood deficiency and qi stagnation, Radix Aconiti Lateralis Preparata and Rhizoma Corydalis are added.