Beta-Sitosterol, ent-7beta-hydroxy-1/5-oxokaur-1/6-en-1/8-yl acetate, asperglaucide, beta-sitosterol-3-0-beta-D-glucopyranoside, acetyl aleuritolic acid, stearic acid, ent-1alpha-acetoxy-7beta, 1/4alpha-dihydroxykaur-1/6-en-1/5-one, and glucosyringic acid were isolated from the twigs of Croton tonkinensis Gagnep. (Euphorbiaceae). Their structures were determined by using MS, ID and 20 NMR techniques.