黄芪甲苷是黄芪的主要有效成分，随着对黄芪甲苷药理作用的深入研究发现，其具有调节免疫、缺血保护、心脏保护、抗炎、抗病毒和抗肿瘤等作用，综述黄芪甲苷药理作用的研究进展，并对其作用机制进行探讨，为进一步研究开发黄芪甲苷提供理论依据。

Astragaloside IV is the major effective component isolated from Astragali Radix. The further studies on the pharmacological activities in recent years have demonstrated that astragaloside IV plays a role in regulation of the immune, ischemia protection, heart protection, anti-inflammation, antiviral action, and anti-tumor, etc. The pharmacological activities of astragaloside IV are reviewed in this paper, and its mechanism of action is also discussed, in order to provide theoretical foundation for further development.