It is best not to do cervical cancer screening after intercourse, as it can have an effect on the results and lead to errors in the test results. Cervical cancer screening mainly involves the collection of cervical cells for liquid-based thin-layer cytology and HPV examination. If you have intercourse before the test, it may cause damage to the cervix and some abnormal cells may appear, which may affect the screening result. It is best to perform cervical cancer screening after menstruation, and at the same time, no coitus within three days, no vaginal douching to improve the accuracy of the test results. Cervical cancer screening is an important test for women, and women who have already had sex should have cervical cancer screening every year to detect pre-cancerous lesions in the cervix at an early stage, and carry out early diagnosis and treatment for the lesions, which can effectively prevent and treat cervical cancer.