Whitmania pigra Whitman, as a popularly used traditional Chinese medicine for removing blood stasis, has a great effect of anticoagulant,antiplatelet, antithrombus, the main active elements of Whitman are protein and enzyme.

• 本文通过对水蛭(蚂蟥Whitmania pigra Whitman)的抗凝活性成分跟踪，确定水蛭的提取、分离、纯化的合理方法，分离出水蛭中抗凝活性的单一成分，并对其效价及分子量进行了测定。