Siwu decoction is mainly composed of four kinds of drugs: Radix Paeoniae Alba, Rhizoma Chuanxiong, Radix Angelicae Sinensis and Radix Rehmanniae Preparata, which can enrich blood and nourish blood, and can treat the syndrome of deficiency and stagnation of blood. Sijunzi Decoction is composed of Poria, Ginseng, Atractylodes macrocephala, Glycyrrhiza uralensis and other drugs, which mainly focuses on invigorating qi and treats symptoms such as loss of appetite, general weakness and sallow complexion caused by deficiency of spleen and stomach.