Chemical Composition: Ginkgo leaves have a very complex chemical composition, with over 140 compounds isolated. Flavonoids and terpene lactones are the two main active components. Ginkgo flavonoids, also known as monoflavonoids, are mainly composed of glycosides of kaempferol, quercetin, and isochemicalbook rhamnoside. Ginkgo terpene lactones belong to the terpene class of compounds, consisting of terpene lactones and diterpene lactones, with ginkgolides and ginkgolides being the main components. In addition, they also contain polypentenols, organic acids, polysaccharides, amino acids, phenols, and trace elements.