Ginkgo biloba L. is also called white fruitage tree, and it is one of the higher plants, which have the longest life. The leaves from Ginkgo biloba L. mainly included some effective constituents, such as flavonoids and ginkgolides, which can aggrandize the blood vessel, increase the outflow of blood, improve the kinetic of blood-circulating, decrease the resisting force of cerebrovascular, suppress thrombisis and clean free radical of human body. Ginkgolide B especially is the most effective agon...