The cervical points 3, 6, 9 and 12 are the sampling sites for cervical biopsy, which is equivalent to a circular watch at 3:00, 6:00, 9:00 and 12:00 for cervical biopsy and then sent for pathological examination to clarify the presence of cervical lesions. Most cases of cervical biopsy in women are not cervical cancer. There are many cervical biopsies that come out with chronic cervicitis, and there are a few patients who come out with results showing low grade squamous intraepithelial lesions, or high grade squamous intraepithelial lesions. The severity of the cervical biopsy must be predicted based on the liquid-based cytology of the cervix, as well as the HPV test of the cervix. Liquid-based cytology of the cervix, also known as TCT, is a cervical screening test for cancer prevention. A cervical biopsy is necessary if the cervical fluid-based cytology test reveals suspicious cervical cells or even if the cervical HPV test reveals a positive HPV high-risk infection. The most conventional and classic method of cervical biopsy is to remove tissue at 3, 9, 6 and 12 points of the cervix and send it for pathological biopsy. Nowadays, the most common method is to use the iodine test or white vinegar test under the colposcope to select the lesion and send it for biopsy, which has a higher positive rate.