Objective: To study the effects of active components (total saponins, total steroids and total alkaloids) of Achyranthes bidentata Blume on the contraction of vascular smooth muscle.

• 摘要目的：研究怀牛膝有效成分（总皂苷、总甾体、总生物碱）对血管平滑肌收缩作用的影响。