Endometrial cancer (EC) is a common disease in gynecological tumors, and in recent years the incidence of people tend to younger. The diagnosis of EC mainly depends on the patients''clinical manifestations , segmented curettage, and transvaginal ultrasound, CT, MRI and other imaging methods,in which ultrasound with its high resolution, low cost, high repeatability, no damage and other advantages as a preferred check.The depth of EC''s muscle invasion is an important basis for the selection of clinical treatment options, but also the main factor in assessing the prognosis of patients, so a clear diagnosis and accurate staging is particularly important. In recent years, three-dimensional ultrasound,Contrast - enhanced ultrasonography?is developing?rapidly, and it is progressing rapidly in the diagnosis and staging of EC.Following is the diagnosis and staging of EC were summarized, with a view to more accurate guidance of clinical.