小柴胡湯在仲景方中是一個療效顯著，使用範圍極廣，使用頻率極高的方劑。後人對其評價很高，清代傷寒大家柯琴喻其為「少陽樞機之劑,和解表裏之總方」。足見其在經方的代表性是何等重要。它的治療範圍目前還在繼續擴大之中，用好小柴胡湯是研究及應用傷寒方之基本功，這裡僅就個人所知來談談小柴胡湯的應用。以下就從小柴胡湯的原文、病機、組方、方義、相關問題、解析、應用等方面來談談。

XiaoChaiHuTang is a formula in On Cold Damage with frequent and extensive application. It is greatly appraised. In Qin dynasty, a famous doctor, Qin-Yu Ko, called XiaoChaiHuTang “the formula of ShaoYang, the king formula to harmonize the exterior and the interior”. The application
of XiaoChaiHuTang is still being researched. It is very basic to use XiaoChaiHuTang appropriately in terms of research and apply the theory of On Cold Damage. I would like to share the application of XiaoChaiHuTang in this article. Let’s talk about XiaoChaiHuTang in terms of its original quote, mechanism, composition, explanation, related problems, analysis and application.