绪言与总论方剂,是辨证审因决定治法之后,选择合适的药物,酌定用量,按照组成原则,妥善配伍而成,是辨证施治的工具之一。方剂学则是研究并阐明洽法和方剂的理论及其运用的一门学科。治法是指导遣药组方的原则。方剂是体现和完成治法的主要手段。历代医家制定了许多治法,多次作过分析归纳,其中以清代程钟龄总结归纳的“八 The preface and the general prescription are the proper tools for dialectical treatment after selecting the appropriate medicine, discretionary dosage, and according to the principle of composition. Formulaology is a discipline that studies and clarifies the theory and application of negotiating prescriptions and prescriptions. The governing law is the principle that guides the prescription of the drug. Formulas are the main means to reflect and complete the governing methods. The ancient physicians developed a number of governing methods, which were analyzed and summarized several times, including the “eight” summarized by Cheng Zhongling in the Qing Dynasty.