火药是我国古代四大发明之一,后经阿拉伯国家传人欧洲。此段历史已有冯家升、张子高先生洋加考证过,本文不拟再议。现只对我们掌握的一些有关火药的原始史料,作一番考核。在谈到火药时,普遍引用的最早配方,都认为是“孙真人丹经内伏硫黄法”,其出处是《道藏·众术类· Gunpowder was one of the four great inventions in ancient China and was transmitted to Europe through Arab countries. This section of history has been Feng Jiasheng, Mr. Zhang Zigao ocean plus textual research, this article does not intend to revisit. Now we will only make some assessments of some of the original materials we have learned about gunpowder. When it comes to gunpowder, the earliest commonly quoted formula is considered as “Sun Zhenren Dan Vapor Sulfur Method” and its source is "