Abstract: Five flavonol glycosides were isolated from the leaves of Ginkgo biloba and their structures elucidated by HPLC、 UV and 1HNMR spectroscopy as quercetin 3O[6O(aLrhamnosyl)βdglucosyl](rutin)(1);kaempferol3O(2O｛6O[p(βdglucosyl) oxytranscinnamoyl]βdglucosyl｝aLrhamnosyl)(2);kaempferol 3O(βdglucosyl)(3);quercetin 3O｛2O[6O(phydrixytrans cinnamoyl)βdglucosyl]aerhamnosyl｝(4);kaempferol 3O｛2O[6O(phydroixytranscinnamoyl)βdglucosyl]aerhamnosyl｝(5);Three of them are unusual pcoumaroyl esters.