RESUMO
Zixue was first recorded in detail in Qianjin Yifang, and practitioners of later generations renamed it as Zixuesan and Zixuedan, which is the representative prescription of antipyretic preparations and has high clinical application and research value. At present, there have been many studies on the pharmacological effect and clinical application of Zixue, but the medical books of the past dynasties have slightly different records on Zixue, which has brought some difficulties to the reasonable clinical application and research of this prescription. In addition to the introduction of Zixuesan, which is different from the ancient recipe, the researchers have questions about which development method can reasonably inherit and develop the classical preparation. The authors intend to summarize the historical evolution of "formula" and "preparation" of Zixue, in order to clarify its historical context, which can provide a reference for the modern research and development of this formula, and provide a new ideas for the in-depth exploration of other classic preparations.