Background: The risk of suffering epithelial ovarian cancer (EOC) for women increasing with age evidently, while the prognosis of older EOC patients remain unclear. Against the backdrop of the accelerate aging process in China, this paper investigates whether the older EOC patients have a lower overall survival probability than the younger patients based on the sample of ethnic Chinese population.Methods: A total of 323 ethnic Chinese patients diagnosed as epithelial ovarian cancer were extracted from the Surveillance, Epidemiology, and End Results (SEER) database. We compared the overall survival probability between the younger group (<65 years) and the older patients group (≥65years). Survival curves were drawn using the Kaplan-Meier method, comparisons among different subgroups were evaluated using log-rank tests, and independent prognostic factors were identified by univariate and multivariate Cox regression analyses.Results: 61 patients were (18.9 %) in the older patients group and 262 (81.1%) in the younger group. The distribution patterns between two groups were significantly different with regard to marital status, histologic type and FIGO stage. The median overall survival (OS) was significantly longer in the younger group than the older patients group (not reached vs median 50 months, p<0.05). Univariate Cox regression analysis showed that age, as well as primary tumor laterality, tumor histological grading, histology, FIGO stage, surgical range and the number of lymph nodes dissected were significantly associated with OS. However, the multivariate analysis demonstrated that the age no longer had an independent impact on overall survival once other confounding variables were controlled (HR: 1.334, P=0.226). Only primary tumor laterality, histology, and FIGO stage, were independent risk factors (HR: 1.885, P=0.008; HR: 2.003, P=0.035; HR: 4.006, P=0.008 and HR: 5.272, P<0.001; HR: 1.885, P=0.008). Moreover, the number of lymph nodes dissected more than 10 was a protective factor (HR: 0.397, P=0.008).Conclusion: Older EOC patients have a worse prognosis than the younger patients largely, but not directly and independently. FIGO stage still stands as the most potent risk factor for older patients’ survival.