泻青丸原出宋·钱乙《小儿药证直诀》(以下简称《直诀》)卷下“诸方”中,由当归、龙脑、川芎、山栀子、大黄、羌活、防风、竹叶组成。古今医家或方书多数认为方中龙脑是“龙胆”之误。笔者反复查阅原书及有关文献,认为钱氏用药原意仍是龙脑(即冰片),并非龙胆草。认为应改作龙胆草的理由归纳之有三:1、泻青丸是清泄肝经郁火之方,而清肝常用龙胆草,不用冰片。2、原书龙脑的用量和其余七药等分,相比之下,龙脑用量过大,不合临床实际。3、原书龙脑下有“焙秤”二字,而龙脑不能经火制,故疑是龙胆。基于上述理由,古代医家吴琨、吴谦、汪昂等在方论中改作龙胆草进行了讨论。近人谢观编《中国医学大辞典》、广州中医学院主编《方剂学》(1979 Xieqing Pills was originally produced by Song Qianben, “Pediatric Drugs and Drugs Directly” (hereinafter referred to as “Straightness”), and was divided into “Folk Parties” by Angelica, Rhizoma Rhizoma, Rhizoma Chuanxiong, Fructus Gardeniae, Rhubarb, Radix Astragali, and Windbreak. Bamboo leaves composition. The majority of ancient and modern physicians or Fangshu believe that the Fangzhong Longnao is the mistake of “Gentian.” The author repeatedly consulted the original book and related literature, and believed that the original intention of Qian’s medication was still borneol (ie, borneol), not gentian. There are three reasons that should be changed to gentian: 1, Xieqing Pill is the side of the liver fire transpiration, and Qinggan commonly used gentian, no borneol. 2. The amount of borneol in the original book is equal to that of the remaining seven drugs. In contrast, the amount of borneol is too large to meet clinical practice. 3, the original book under the dragon has “Bailing” word, and the dragon brain can not be fire, it is suspected gentian. Based on the above reasons, the ancient physicians Wu Yi, Wu Qian, Wang Aung, etc. were reorganized as gentian in square theory. Inspecting the “Chinese Medical Dictionary” and the “Fundamental Science” edited by Guangzhou University of Traditional Chinese Medicine (1979)