The thickness of the endometrium should be based on the age of the patient. For women of childbearing age, an endometrial thickness of >10 mm is normal; for postmenopausal women, an endometrial thickness of >6 mm may be considered an endometrial abnormality. For patients whose ultrasound examination does not indicate endometrial abnormality, if accompanied by recurrent postmenopausal vaginal bleeding, they should be highly alert to the possibility of endometrial cancer and undergo diagnostic scraping or hysteroscopy in order to clarify the type of lesion. Therefore, in the diagnosis of endometrial cancer, it is necessary to evaluate the patient’s clinical manifestations, and perform hysteroscopy and pathological histologic examination when necessary.