In this study 70 hybrids were obtained by cross between seven Dian type sterile lines with different cytoplasms and ten strains selected as female parents and as male parents,respectively.The pollen fertility and the seed setting percentage of these materials were also studied. The results showed that the maintenancee is mainly consistent for these 7 Dian type sterile lines.The restoring abilities to these seven Dian type sterile lines were different to a great extent. Because the relationship of maintenance is mainly consistent in seven sterile lines with different cytoplasms, it is possible to breed many sterile lines with same cytoplasm. This provided experience for cytoplasmic diversity in Dian type hybrid rice