Objective:To investigate the clinical and clinicopathological characteristics of synchronous primary cancers of the endometrium and ovary.Methods:The clinicopathological data of 15 patients with synchronous primary cancers of the endometrium and ovary were retrospectively reviewed.Results:12 patients(80%) were diagnosed to be correctly of 15 patients with synchronous primary cancers of the endometrium and ovary,3 patients(20%) who were misdiagnosed as the cancers of endometrium in early stage had ovarian metastasis,the reason of misdiagnosis was short of the knowledge about synchronous primary cancers of endometrium and ovary,to analyze diagnosis without the clinical data,the representation of medical imaging and clinicopathological characteristics.Conclusion:If we undertake a comprehensive analysis with clinic,medical imaging,pathological characteristics,the diagnosis of synchronous primary cancers of the endometrium and ovary will not be difficult.