Abstract:Seven constituents were isolated from roots of Momordica dioica. Their structures were elucidated by spectra analyses (MS, IR, UV, 1H NMR, 13C NMR). Two new compounds were es-tablished to be 3β- o- benzoylu-ll -oxo- ursolic acid and 3β- o- benzoyl- 6- oxo ursolic acid. Five known compounds were established to be oleanolic acid, gypsogenin, hederagenin, α-spinasterol and stearic acid.