Two triterpenoid saponine were isolated from the stems of Acer ginnala Maxim. The structures of triterpenoid saponins were established as ilexoside O, $3-O-{alpha}-L- rhamnopyranosyl(1{ ightarrow}2)-{eta}-D-glucopyranosyl(1{ ightarrow}2)-{eta}-D-xylopyranosyl-pubescenolic$ acid 28-{eta}-D-glucopyranosyl$ ester(1) and ilexoside K, $3-O-{eta}-D-glucopyranosyl(1{ ightarrow}2)-{eta}-D-xylopyranosyl-pubes-cenolic$ acid $28-{eta}-D-glucopyranosyl$ ester(2). Their chemical structures have been elucidated on the basis of spectral methods.