The complete analysis of 1H NMR, 13 C NMR,DEPT, 1H 1H COSY,HMQC and HMBC of the hydrolyzed GBE conforms the signal assignment and mass percentages of dissolved quercetin,kaempferol,isorhamnetin,which offers a useful method for the fingerprint and quantitative analysis of GBE'Flavonoides mixture.