Endometrial cancer is one of the most common tumors of the female reproductive system. It is a group of epithelial malignant tumors that occur in the endometrium and is most common in perimenopausal and postmenopausal women. The common clinical manifestations of this disease include bleeding after menopause, vaginal discharge, abdominal mass and pain, etc. The presence of endometrial cancer can be considered when the above symptoms occur. Early symptoms of endometrial cancer are not obvious and can only be detected by chance during census or gynecological examination. Therefore, in order to detect endometrial cancer at an early stage, it is necessary to identify it according to medical history and confirm the diagnosis with the help of relevant auxiliary examinations. If there is a history of menstrual disorders, especially a history of excessive endometrial hyperplasia, infertility, long-term use of estrogen drugs, or a combination of obesity, hypertension, diabetes and other diseases, one should be alert to endometrial cancer. (1) Ultrasound examination: to understand the size of uterus, thickness of endometrium, whether there are occupying lesions in uterine cavity, whether there is myometrial infiltration and its degree, etc., and its diagnostic rate is over 80%; (2) Segmental diagnostic scraping: it is the most common and valuable method to confirm the diagnosis of endometrial cancer, and the specimens of segmental scraping need to be marked and sent to pathological examination separately to confirm or exclude the diagnosis of endometrial cancer; (3) Endometrial cancer in the uterine cavity. (3) Hysteroscopy: Hysteroscopy can directly observe the presence of cancer foci in the uterine cavity and cervical canal, the location, size and extent of cancer foci, and take biopsy of suspicious lesions to facilitate the detection of smaller or earlier lesions; (4) Cytological examination: endometrial specimens can be obtained by hysteroscopic brushing and uterine suction smear to diagnose endometrial cancer, but its positive rate is low and is not recommended for routine application. Treatment methods of early endometrial cancer Endometrial cancer should be treated according to the patient’s age, physical condition, lesion scope and histological type, and appropriate treatment methods should be selected. Generally, surgery is the main treatment for early-stage patients, and adjuvant treatment is selected according to the results of surgery-pathological staging and high-risk factors for recurrence. 1.Surgical treatment: abdominal irrigation fluid examination is performed first, then extrafascial total hysterectomy, bilateral ovary and fallopian tube resection, pelvic lymph node dissection +/- para-abdominal aortic lymph node dissection is selected according to the pathological stage and the degree of cancer differentiation; 2.Radiation therapy: stage I and II patients with poorly differentiated cancer cells and infiltrated parametrium can choose intracavitary radiotherapy for 2 weeks before surgery, and those who are not suitable for surgery can radiotherapy alone.