以肾气丸的衍化为线索 ,简介肾气丸的形成及其衍化过程 ,包括药量或药物炮制的衍化和药味加减的衍化 ,简述了这些衍化对其功用和主治证的影响 ,说明张仲景所创制的肾气丸和历代医家所创制的衍化方 ,对祖国医学补肾方法的发展起了巨大的推动作用。了解肾气丸及其衍化方之间的区别 ,可为临床合理用方提供参考 Taking the derivation of Shenqi Pill as a clue, we will introduce the formation and derivation process of Shen Qi Pill, including the derivation of drug dose or drug preparation and the derivation of drug taste. The effect of these derivation on its function and cardinality is briefly described. The Shenqi Pill created by Zhang Zhongjing and the derivative formula created by ancient physicians played a huge role in promoting the development of the motherland’s medicine and kidney-building methods. Understanding the difference between Shenqi Pill and its derivative can provide reference for clinical rational use