First of all, it is recommended that all women should be aware of screening and women who are sexually active should be screened for cervical lesions by having an annual cervical cytology examination. If you insist on annual checkups, you may find the problem earlier and the early stage of cervical lesions may be cured by general physical therapy methods. When women have abnormalities such as increased leucorrhea, vaginal discharge, bleeding after sex, etc., it is important to visit a gynecological clinic in a timely manner. If they are not seen in time, the consequences will be serious once they develop into infiltrating cancer. Even if there is no discomfort, not much leucorrhea, and women who have sex should have regular cervical checkups, because in clinical observation, a considerable number of patients with cervical precancer or early cervical cancer can have no symptoms, and the appearance of the cervix can be seen as cervical erosion or even smooth to the naked eye (all women should abandon the notion that a smooth cervix does not need to be checked), based on this, the American College of Obstetricians and Gynecologists (ACOG) recommends All sexually active women should have a cervical cytology exam once a year. When three or more consecutive examinations are satisfactory and the results are normal, the number of examinations may be reduced at the discretion of the physician for those at low risk. In addition, cervical cytology is recommended for pre-pregnancy check-ups, and those who have not been screened within the first year of pregnancy should have cytology screening during early pregnancy.