银杏（ＧｉｎｋｇｏｂｉｌｏｂａＬ．）是裸子植物银杏纲中唯一存留下来的古老树种，素有“活化石”之称。６０年代以来，国内外学者对银杏叶的化学成分、药理作用以及应用做了大量研究工作。研究证明，银杏叶中含有多种药用活性成分和营养物质，其提取物能治疗冠心病、心绞痛 Ginkgo biloba (Ginkgo biloba L.) is the only surviving ancient tree species in the gymnosperm ginkgo family known as “living fossils.” Since the 1960s, domestic and foreign scholars have made a great deal of research work on the chemical composition, pharmacological effects and application of Ginkgo biloba. Studies have shown that Ginkgo biloba contains a variety of medicinal active ingredients and nutrients, the extract can treat coronary heart disease, angina