Ginkgo leaves, belonging to the Ginkgo family and genus, are cultivated in areas as far north as Liaoning, south as Guangdong, east as Zhejiang, west as Shaanxi, Gansu, southwest to Sichuan, Guizhou, Yunnan, and other regions. Ginkgo biloba leaves contain natural active flavonoids, bitter lactones, proteins, and other beneficial ingredients for human health.