Objective To detect the genetic amplification and protein expression characteristics of aurora-A in ovarian cancer and to interpret the role of aurora-A gene in course of onset,progression and regression phases of ovarian cancer.Methods The amplification of aurora-A gene was detected by quantitative PCR in 6 normal ovarian tissues and 8 ovarian cancer samples,and its protein expression was examined by immunohistochemistry in 6 normal ovarian tissues and 40 ovarian cancer samples,furthermore,the relationships between over-expression of aurora-A protein in ovarian cancer tissue and its pathologic classification,tissue differentiation,clinical phase,tumor proliferation trait and prognosis were analyzed.Results Quantitive PCR showed that aurora-A mRNA was significantly higher in 8 ovarian cancer samples than that in normal ovarian tissues(P0.05).Conclusion There are abnormal amplification and protein over-expression of aurora-A in ovarian cancer tissue,aurora-A probably play an important role in the onset and progression of ovarian cancer,and the novel biological treatment concerning aurora-A gene and its protein is probably a useful route for curing tumor.