A new anthraquinone glycoside, together with α-sorinin, has been isolated from the bark of Rhamnus pallasii and its structure elucidated as physcion-8-O-β-primeveroside.Key Word Index -- Rhamnus pallasii; Rhamnaceae; α-sorinin; anthraquinone glycoside; physcion-8-O-β-primeveroside; 1,8-dihydroxy-3-methyl-6-methoxy-anthraquinone-8-O-β-primeveroside.