Ginkgo biloba is the only living species of Ginkgo, a famous living fossil of plants, and a precious wood and dried fruit tree species. Ginkgo varieties are divided into five categories according to the shape of seed nucleus: eldest son, bergamot, bell, plum nucleus and roundsubclass. Ginkgo varieties are divided into cultivated varieties, representative varieties and core varieties, namely, Jiafozhi, Maling No.3 (Kuiling), Dajingou, Dongting Di, Dameihe, Gaoyou Y-2, Anlu 1, WL43 ornamental varieties, namely, Ginkgo, Ginkgo biloba, Ginkgo biloba male plant G ♂ ~. The seed varieties of Songyou 1, Wan Yu 9#, and Zhigan Ginkgo S-3 1 are traditional excellent varieties selected from various ginkgo producing areas for many years, such as Taixing Fozhi, Dongting Bergamot, Tancheng Golden Pendant, Ma Ling, Tancheng Round Bell and so on. Ginkgo biloba, also known as ginkgo biloba, belongs to the category of dried fruits, and its economic bearing life can reach thousands of years. Among many dried fruits, Ginkgo biloba ranks third in economic value. The value of ginkgo biloba is mainly reflected in food and medicine. China's ginkgo production accounts for 90% of the world's total output. Ginkgo biloba and ginkgo biloba are important products to earn foreign exchange through export, especially important pharmaceutical raw materials for preventing and treating hypertension and heart disease. Ginkgo biloba extract can protect the heart and brain. There are 160 kinds of known chemical extracts of Ginkgo biloba. There are mainly flavonoids, terpenoids, phenols, alkaloids, polyisoprene, quinic acid, linoleic acid, python oxalic acid, ascorbic acid, α-hexenal, bilobanol, bilobanone and so on. The medicinal use of Ginkgo biloba is mainly reflected in medicine, pesticides and veterinary drugs. Ginkgo biloba was listed as a royal tribute in the Song Dynasty. Japanese people have the habit of eating ginkgo every day. Westerners must eat ginkgo at Christmas. As far as eating methods are concerned, Ginkgo biloba mainly includes fried food, baked food, cooked food, side dishes, cakes, candied fruit, canned food, beverages and alcohol. In the Ming Dynasty, Li Shizhen once said: "Entering the lung meridian can benefit the temper, stop asthma and cough, and reduce defecation." Ginkgo biloba in Ben Feng Jing Yuan written by Zhang Lulu in Qing Dynasty has the effects of resolving phlegm, detoxicating and killing insects, and can be used to treat "furuncle, ulceration of mammary abscess, dental caries, infantile diarrhea, leucorrhea with red and white discharge, chronic stranguria, nocturnal emission and enuresis". In the Ming Dynasty, Chinese patent medicines made of ginkgo seeds appeared in Jiangsu and Sichuan for clinical use. It has the functions of astringing lung and relieving asthma, and is mainly used for treating excessive phlegm, asthma, cough, nocturnal emission, leukorrhagia and frequent urination. Ginkgo biloba exocarp contains a lot of hydrogenated ginkgolic acid and ginkgetin. Ginkgo biloba leaves have the function of regulating respiratory organs, and the water-soluble components of exocarp have good antitussive and expectorant effects, similar to cyclophosphamide and dexamethasone. Ginkgo biloba leaves contain ginkgolic acid, which has a strong inhibitory effect on mycobacterium tuberculosis and dermatophytes, so it can be used to treat tuberculosis and dermatoses. The effective rate of epicarp alcohol intermediate in inhibiting 22 common clinical pathogenic fungi was 865438 0%. 0. 1% hydrogenated ginkgolic acid inhibited 25 clinical pathogenic fungi with an effective rate of 92%. Ginkgo biloba leaves have important medicinal value. Ginkgo biloba, bitter and astringent, contains biflavonoids. It has been proved by experiments and clinic that it can reduce serum cholesterol and dilate coronary artery, and has certain auxiliary treatment effect on coronary heart disease and hypertension. In 1960s, the Institute of Botany, Chinese Academy of Sciences and other units developed Shuxuening injection with Ginkgo biloba leaves, which has certain curative effects on coronary heart disease, angina pectoris and cerebrovascular diseases. Using the effective chemical components of Ginkgo biloba leaves and its special medical and health care functions to produce health food, medicine and cosmetics is attracting the attention of research, development and production units at home and abroad. Many enterprises in various countries compete to develop and produce natural green products with ginkgo as raw materials to replace synthetic chemicals that have great side effects on human health. There are 20,000 kinds of ginkgo beverage, ginkgo peach juice, ginkgo beer, ginkgo tea and other health products developed from ginkgo leaves in Dafeng Ginkgo Base, Jiangsu Province. Pizhou City, Jiangsu Province is in the forefront of the world in the planting and processing of Ginkgo biloba extract. Ginkgo biloba and ginkgo biloba leaves are used to make healthy pillows.