Abstract: the prescription theory of Fu Xing Jue is summarized into the system of the figure of Tangye Principle and the system of Erdan-Sishen Decoctions. At the same time, in combination with the content of Fu Xing Jue, the formulation idea of Zhenwu Decoction is explored with its prescription theory. It is found that it contains the application of the thinking of five viscera gasification and the Xiang-number thinking of four gods and four signs. It is expected to provide certain ideas and literature support for the application and research of Zhenwu Decoction and enrich the prescription theory.