Abstract: According to P1 ×P2 incomplete diallel cross design, by using the way of NC Ⅱ, the combining ability on customize and the introduction of 11 inbred line material were determined and analyzed to provide theoretical guidance for future breeding work. Based on 11 inbred lines materials plant height, ear, ear length, ear diameter, bare tip length, ear rows,row grains, hundred grain weight eight main characters and general combining ability analysis, taken together, PH6 wc, K12,K3, 816, 2011, the five inbred lines generally coordination with the strong, Use them as parents were more likely to obtain superior combination; Through the combination of 30 special combining ability effects of relative value estimate, K12 ×PH6wc, 08-42×816, PH4cv×PH6wc, K3×816 production special combining ability were had high effect value, Especially in grain number, hundred grain weight, ear length and other aspects show the special excellent characteristics, has great value of development.