A cervical biopsy is a biopsy of the cervix, which is a small piece of biopsy taken from the cervix for pathological examination to determine the diagnosis. It is mostly used when there is suspicion of cancer in the cervix, or suspicion of cancer cells in the cervical smear, or suspicion of specific inflammation, such as cervical tuberculosis. Cervical biopsy can clarify the diagnosis and determine the treatment. Cervical biopsy is the most reliable basis to confirm the diagnosis of cervical cancer. Whether early or advanced cervical cancer, this test is necessary to determine the pathological type and the degree of cell differentiation of the cancer. The method of cervical biopsy is simple. After sterilizing the vulva, vagina and cervix, a special biopsy forceps is used to take several small pieces of tissue according to the lesion location and requirements, put them into 10% formalin solution for fixation and preservation, and send them to the pathology department for sectioning and staining, and a special pathologist will observe and analyze them under a microscope to make a pathological diagnosis. Pathological diagnosis is the gold standard for treatment of diseases, and with the gold standard there will be no mistakes in treatment. The following points should be noted for cervical biopsy: (1) It is better not to do it 1 week before menstruation and during menstruation to prevent bleeding and increase the chance of infection. (2) Vaginal cleanliness should be checked before the procedure and biopsy should be performed only after the absence of vaginitis is confirmed. (3) Blind biopsy should be avoided and multi-point biopsy should be performed under iodine staining. If colposcopy equipment is available, biopsies can be taken under colposcopy to improve the diagnostic accuracy. (4) Because there may be a small amount of bleeding at the biopsy site, avoid sexual intercourse, vaginal irrigation or sitz bath for 1~2 weeks after cervical biopsy. When there is a lot of vaginal bleeding (more than menstrual flow), you should go to the hospital for examination and treatment.