The chem. constituents in the fruits of Acanthopanaxg acilistylus were studied.The chem. components were isolated and purified by silica gel, ODS C18, and Sephadex LH-20 column chromatogram.The chem. structures were elucidated on he basis of physicochem. properties and spectral data.Seven compounds were isolated and identified as chikusetsusaponin IV a Me ester (1), chikusetsusaponin IV a Bu ester (2), cankoreoside D(3), acantrifoside A(4), daucosterol (5), 3-epi-betulinic acid (6), ent-16α-hydroxykauran-19-oic acid (7).Compounds 1, 2 are obtained from the Acanthopanax for the first time, others are obtained from the fruits of the plant for the first time.