In this study,24 genotypes of wheat and 12 of their F1 hybrids were planted in the same field.The analysis of heterosis on their main characters showed that difference on the same character among 12 crossing combinations was significant.The characters of weight per ear,1000 grain weight and heading degree have the higher heterosis.The results also showed that the ameliorative index could become the guideline when selecting high heterosis and there were some relationship between the difference of the two parents and the heterosis of their F₁ hybrids.