There are many clinical causes of cervical blood, such as vaginitis, cervicitis, cervical erosion, cervical polyps, etc. In serious cases, it may be a sign of cervical precancer or cervical cancer: 1, vaginitis, cervicitis: vaginitis spreads to the cervix or the inflammatory stimulation of the cervix itself makes the mucosa congested and edematous, resulting in brittle tissue, and women may show contact bleeding during sex or irregular vaginal bleeding in droplets, both are manifestations of cervical blood; 2. Cervical erosion: the columnar epithelial cells of the endocervical canal migrate out to the ectocervix of the cervical canal, and contact bleeding can occur during sexual intercourse or gynecological examination, in addition to cervical bleeding symptoms, there are other clinical manifestations, such as abnormal leucorrhea, including increased amount of leucorrhea, yellow color, odor, and accompanied by vulvar itching; 3. Cervical polyps: when cervical polyps protrude from the cervical opening, contact bleeding can contact bleeding occurs, or cervical polyps grow to the inside of the cervical canal, which can lead to bleeding due to incomplete shedding of the lining during menstruation; 4. Cervical cancer: as the tumor gradually increases, it compresses the adjacent tissues and blood vessels, leading to local bleeding. In addition to gynecological examination to find out whether there are superfluous organisms locally in the cervix, cervical cancer screening should be conducted. Therefore, when there is blood in the cervix, you should go to a regular hospital in time to perform routine gynecological examination, routine white belt examination, cervical HPV, cervical TCT examination and colposcopic cervical biopsy to identify the cause of bleeding according to the pathological results of biopsy and then take corresponding treatment according to the cause.