Three new steroidal alkaloids were isolated from the bulbs of Fritillaria delavayi FRANCH.The structures of delafrinone(1),delafrine(2)and the third alkaloid were deduced to be(225,25S)- 313,16P-dihydroxy-5a-cevanin-6-one,(22S,255)-5a-cevanine-3f3,6/3,16/1-triol and(22R,255)-solanid-5-enine-43,5a,0-triol(3),respectively,on the basis of spectral data and chemical evidence .