The objective of the study was to investigate the effect of Ginkgo leaf extracts on the preservation of citrus. In order to study the effect of Ginkgo biloba leaf on preservation of orange, fresh "Shatang"-1-1-1 orange were stored at 16ºC after dipping in extract concentration of 25 g l , 12.5 g l and 6.25 g l , with sterile water as control group. The weight loss, firmness, soluble solids contents, titratable acid contents, Vitamin C contents, flavonoid contents and total phenol contents of orange were measured every 2 days during storage period. The results showed that the extract of Ginkgo biloba leaves could reduce the weight loss and firmness, inhibit the decreases in the contents of soluble solids, titratable acid, Vitamin C, flavonoid and total phenol. The main effective components of Ginkgo leaf extracts are Ginkgo flavonoid and lactone compounds, flavonoid is a kind of natural antioxidant which has broad-spectrum c and antimicrobial-1 properties. A 6.25 g l leaf extracts of ginkgo biloba was the best concentration for the preservation of "Shatang" orange. Antimicrobial activity, Flavonoid content, Ginkgo biloba, Preservation effect, Shatang orange different concentrations Effect of Ginkgo biloba leaf extract on preservation of "Shatang" Orange