Ginkgo biloba L. called living fossil of gymnosperm, is a special floristics of our country .Since 19th century,Ginkgo leaves have been studied a lot all over the world. It has been found the flavonol glycosides and terpene trilactones are considered the two pharmacologically most important groups present. Ginkgo biloba is an ancient Chinese phytomedi -cine used to treat various ailments including circulatory and demential disorders. The positive effects of Ginkgo extracts are thought to result f...