Currently, a cervical smear is clinically essential for women undergoing gynecological examinations. The main items examined are cervical cell variation and the presence of HPV infection, which is one of the most common methods used to screen for cervical cancer. A cervical smear involves taking a small sample of exfoliated cells from the cervix, placing it on a glass slide, and then studying it under a microscope for abnormalities. Nowadays, as an essential part of women’s physical examination, cervical smear is currently the easiest and most effective diagnostic method to widely screen for cervical cancer. Cervical smear screening, it has reduced the mortality rate of cervical cancer by at least 70%. For women who are married or sexually active, they should be screened for cervical cancer regularly every year. With the development of medicine, the technology of cervical smear is now more and more advanced, which generally refers to liquid-based thin-layer cytology test, this test can clearly see the examined cells and make a correct medical diagnosis. Cervical cancer is a common gynecological disease nowadays, and it is also a disease that can directly lead to death. Annual cervical smear can greatly reduce the mortality rate of cervical cancer. Therefore, no matter what, as long as you have sex, you must have regular cervical smears to prevent cervical cancer.