桂枝汤在临床应用广泛。通过温习《伤寒杂病论》中有关桂枝汤的条文并研究相关临证医案,挖掘此方的理论与功用。将此方功效归纳为化气益阴、调和营卫、燮理阴阳三方面,拓展了“调和营卫”功效的外延。通过分析比较桂枝汤与四君子汤、补中益气汤的异同,强调桂枝汤在治疗“中气虚寒兼有血弱邪滞”证候中的作用。 Guizhi soup widely used in clinical. Through the review of “Treatise on Febrile and Miscellaneous Diseases,” the relevant provisions of Guizhi Tang and clinical research on the case, mining the party’s theory and function. Efficacy of this side can be summarized as Qi and Yin, reconcile Ying Wei, Xie Yin and Yang Xie Yin, expanding “reconciliation Ying Wei ” effect of extension. By analyzing and comparing the similarities and differences between Guizhi Decoction and Sijunzi Decoction and Buzhong Yiqi Decoction, we emphasize that Guizhi decoction plays a role in the treatment of Syndromes of Qi Deficiency and Blood Deficiency.