Abstract: Each of the two entries of syndromes of Fuzi Decoction has its own emphasis, but one recipe is indicated for several syndromes. The pathogenesis for the syndrome of Huanglian Ejiao Decoction is yin deficiency and heat hyperactivity. The syndromes of Wuzhuyu Decoction and Sini Powder are differentiated from the syndrome of Sini Decoction for Shaoyin disease.