Triterpenoids were isolated from the whole plant of Orostachys japonicus (Crassulaceae) by repeated column chromatography. Their structures were identified as friedelin (1), glutinol (2), ${eta}-sitosterol$ (3), friedelinol (4), $5{alpha},8{alpha}-peroxyergosterol$ (5), ${eta}-sitostenone$ (6) and glutinone (7) by spectral analysis. Among them, compounds 5 and 6 were isolated for the first time from this plant.