What do we often refer to as pre-cervical cancer screening? Generally married women over 25 years old should be screened every 3-5 years. Cervical cancer screening methods for those whose mothers or sisters are at high risk of cervical cancer should be examined once a year. Commonly used cervical cancer screening methods include the following: 1. Cell testing: Pap smear and cervical fluid-based thin-layer cytology Pap smear used to reduce the incidence of cervical cancer by 70%-80%. Later, it was found that the traditional cervical Pap 5 classification method had a high false negative rate and limitations. 1988 produced the Burcester system which gradually replaced the traditional cervical Pap 5 classification method, and the cervical liquid-based thin-layer cytology examination TBS reporting method had intuitive content and increased the credibility of the results. 2.HPV test is reported: the detection rate of HPV in cervical cancer can reach 99.7%, according to its carcinogenicity, it can be divided into high-risk HPV and low-risk HPV. through HPV test, the risk of cervical cancer can be predicted to guide the interval of screening, which is also a follow-up monitoring means to judge the effect of treatment. 3.Colposcopy: Colposcopy is a morphological and histological examination to determine the condition of the cervix, which can improve the accuracy of the diagnosis of cervical cancer and precancerous lesions. It is a kind of examination method complementary to cytological examination. Generally, if suspicious cancer cells are found by cytological examination, colposcopy should be performed and biopsies should be taken for pathological examination. At present, there are mainly several cervical cancer screening methods mentioned above, which are clinically proven to have a very significant increase in the detection rate of cervical cancer and cervical precancerous lesions, with a 100% increase in the detection rate of common neoplasia and a 233% increase in the detection rate of highly neoplastic lesions, with accurate and reliable diagnostic results.