There are two methods of cervical pathology examination: 1. Under routine naked eye observation, at 3, 6, 9 and 12 points of the cervix, tissues are taken out with cervical forceps clamps and sent for pathology examination. 2. Under colposcopy, iodine-uncolored areas are taken for pathology examination, and this method largely improves the positive diagnostic rate. If the results of pathological examination are different from the results of cytological examination, or the cervical transformation zone is type III, if necessary, it is also necessary to carry out diagnostic rows of cervical conization, which is aimed at preventing the omission of lesions. Screening of the cervix is divided into three methods, that is, three steps: 1, cytology, 2, colposcopy, 3, cervical pathology, pathology is the gold standard of diagnosis.