A new cycloartane triterpene glycoside (1), named Cyclosophoside A, was isolated from the seeds of Cassia sophera L. The structure of 1 has been determined as 29-O-beta-D-glucopyranoside of 1alpha, 3beta, 24xi, 25-tetrahydroxy-9, 19-cycloartan-29-oic acid by means of physicochemical properties and spectroscopic methods (1D and 2D NMR, MS).