Analysis of Bu Zhong Yi Qi Tang Based on the Theory of “Circulation of Qi as a Whole”

补中益气汤为李东垣生前定稿并由其自序的《内外伤辨惑论》一书中的代表性方剂。此方高度概括总结了李东垣脾胃论的学术理论思想。本文试用黄元御“一气周流”理论从中气衰弱，脾阳虚衰，生湿化火；中气衰弱，土湿木郁，木克土湿化火两个方面浅析其病机，从补气温脾、理气燥湿、调营疏肝方面论其方药组成，以不同的角度分析此方，以期为临床提供诊疗新思路。Bu Zhong Yi Qi Tang (Supplement the Middle and Boost the Qi Decoction) is a representative prescription in Nei Wai Shang Bian Huo Lun (Treatise on the Differentiation of Internal and External Injuries), which was finalized by Li Dong yuan during his lifetime and prefaced by himself. This prescription highly summarizes the academic theoretical thoughts of Li Dong yuan’s spleen-stomach theory. This paper attempts to use Huang Yuanyu’s theory of “the circulation of Qi as a whole” to briefly analyze its pathogenesis from two aspects: the decline of middle Qi, the deficiency and decline of spleen-yang, leading to the generation of dampness and transformation into fire; the decline of middle Qi, the stagnation of earth due to dampness and the depression of wood, with wood counteracting earth and dampness transforming into fire. It also discusses the composition of this prescription from the aspects of supplementing Qi and warming the spleen, regulating Qi and drying dampness, and regulating Ying (nutrient Qi) and soothing the liver. By analyzing this prescription from different perspectives, it aims to provide new ideas for clinical diagnosis and treatment.