Abstract:A new flavonoid glycoside,3‘,4‘-dimethoxy-5,7,5'-trihydroxyl-flavone-3-O-α-L-rhamnopyranoside(1)and four known flavonoid glycosides were isolated from the arerial part of Clausena exavata(Rutaceae),collected from Xishuangbanna, Yunnan, P R China.The 13C NMR assignments for the C6 and C8 of the four known compounds 2-5 were revised by means of 2D NMR experiments.