To study the chemical constituents of the leaves of Aralia elata (Miq.) Seem, and find new or effective components. Compounds were isolated by repeated silica gel, ODS and Sephadex LH-20 column chromatography. The structures were elucidated by NMR and HRESI-MS spectrometry. A triterpenoid saponin and two flavonoid glycosides were isolated from the leaves of A. elata, and their structures were elucidated as echinocystic acid-3-O-β-D-glucopyranosyl-(1–3)-β-D-glucuronopyranoside-6'-O-butyl ester (1), 7-O-α-rhamnopyranosyl-(S)-quercetin-3-O-β-glucopyranosyl-(1→2)-α-rhamnopyranoside (2) and 7-O-α-rhamnopyranosyl-(S)-quercetin-3-O-β-6-caffeoyl-glucopyranosyl-(1→2)-α-rhamnopyranos-ide (3), respectively. Compound 1 is a new triterpenoid saponin, which is the first one with a butyl group isolated from the genus Aralia, while compounds 2 and 3 are reported from this species for the first time.