Abstract: In the method of nucleo-cytoplasmic interraetion male sterility heterosis,Keyang No.5 （old code： T95）,a new triple crossing hybridization of confection sunflower,was bred by the way of test cross,back cross and self cross.This cultivar possessed of fertility,disease resistance and good commodity characters. In Regional Test of Inner Mongolia,the yield of Keyang No.5 was 3406.5kg/hm2.which out-yielded the control DK119 by 13.24% and SH909 by 9.30%.