Abstract: A new steroidal alkaloidal glucoside, C₃₄H₅₇NO₇, mp 284～286℃, named ningpeisinoside, was isolated from the bulb of Fritillaria ningguoensis S.C. Chen et S F. Yin. Based on preparation of derivatives and IR, MS, ¹HNMR, ¹³CNMR spectral studies, the structure of ningpeisinoside has been established as N- methyl- 5α- veratranine-6-oxo-3β-O-β-D-glucoside (Ⅰ).