There are two main reasons for bleeding during sex. First, consider having cervical inflammation. The second point is to exclude cervical cancer. In case of cervical inflammation, the appearance is congested and edematous, and the mucous membrane will be ectoplasmic, so vaginal bleeding will occur during sex or gynecological examination, but cervical lesions need to be ruled out by monitoring TCT and HPV. The development of cervical cancer is stage-specific, and there is a relationship between the persistent infection of high-risk HPV and the development of cervical cancer. Therefore, through monitoring TCT and HPV, cervical precancerous lesions can be detected early, and whether there are high-risk factors causing cervical cancer, that is, HPV infection, can be detected early, so that effective treatment can be taken, which can largely reduce the incidence and mortality of cervical cancer.