The plant Lasia spinosa L. cultivated in An Giang province, three compounds were isolated, 3-O-[beta-D-glucopyranosyl]-stigmasta-5,22-dien (1), Vitexin (2) from the ethylacetate extracts and Vitexin-2"-O-beta-D-glucopyranoside (3) from the butanol ones. Their structures were elucidated by NMR (1D and 2D-NMR) in reference to the literature data.