Cervical cytology is one of the main methods to confirm the diagnosis of pre-cancerous lesions of the cervix. It is usually performed using a vaginal speculum by scraping cells from the junction of squamous and columnar epithelium of the cervix for cytological examination under a microscope. The purpose of the test is to observe the morphology of the exfoliated cells and to screen for vaginal and cervical infections, cervical lesions, and cervical cancer. At present, the most advanced testing equipment is the liquid-based quantitative DNA computerized testing system (TCT), which can detect microscopic changes that cannot be observed by the naked eye, thus significantly increasing the positive rate of diagnosis and helping women to avoid the tragedy of premature death caused by cervical cancer. First, learn about cervical cytology smear. A smear is a simple, quick and painless test that takes only 5 to 6 minutes. During the examination, the patient’s vagina is dilated with a vaginal dilator and then, using a spatula or cervical brush, cells are scraped from around the cervix and the posterior vaginal wall, smeared onto a glass slide for chemical fixation or quickly immersed in fixative and sent to the pathology department for cytologic examination. Choice of examination time. Examinations should be avoided during menstruation. The most suitable time for cervical smear examination is between the 7th and 20th day after menstrual cleansing. In case of severe cervicovaginal inflammation, the smear should also be done after treating the inflammation so that the increased red and white blood cells do not affect the accuracy of the smear. You should not take a bath before the test as it may affect the change of vaginal cells. The vagina should not be douched as this may wash out the vaginal cells and affect the examination. No suppositories can be used in the vagina. Cannot have intercourse (the night before).