The three most common gynecological tumors, namely cervical cancer, endometrial cancer and ovarian cancer, are as follows: 1. Cervical cancer: it is the only gynecological malignancy that can be eliminated. Early lesions can be detected through early screening, such as HPV and TCT duplex screening. Pre-cancerous lesions of the cervix and early invasive cancer can be diagnosed through the three-step approach. Cervical cancer vaccine can prevent cervical cancer; 2. Endometrial cancer: It often occurs in postmenopausal women, and the clinical manifestations are postmenopausal vaginal bleeding, increased leucorrhea and mass. Women with obesity, late menopause, early menstruation, infertility, and polycystic ovary syndrome belong to the high-risk group. Patients need regular medical checkups and transvaginal ultrasound to check the thickness of the endometrium. Endometrial thickening without vaginal bleeding does not require management. For symptomatic endometrial thickening, patients are recommended to undergo segmental scraping or hysteroscopy to determine whether there is early endometrial cancer through pathological examination; 3. Ovarian cancer: for high-risk groups, if the patient’s mother has BRCA type 1 and 2 genes, genotype screening, serum CA125 or transvaginal ultrasound examination is required for early detection of ovarian cancer.