Abstract: In the method of nucleo-cytoplasmic interraction male sterility heterosis,Keyang No.7（original code：T97） and T33,the two new triple crossing hybridizations of confection sunflower,were bred by the way of test cross,reciprocal cross,back cross and self cross.These cultivars possessed of fertility,disease resistance and good commodity characters.In Regional Test of Inner Mongolia,the average yield of Keyang No.7 and T33 was 2616.0kg/hm2,which out-yielded the control RH3146 by 15.2% and SH909 by 15.0%.