There is no such surgical operation as hysterectomy, the exact term is conical hysterectomy. Generally, lesions occur in the cervix and conical excision is required for examination and treatment according to the condition. Leep knife and cold knife can be used, the former may cause ablative shrinkage of the traumatic tissue and affect the results of the pathological examination, with relatively little intraoperative bleeding, the latter is the opposite. In the case of cervical liquid-based thin-layer cell smear, or cervical scraping repeatedly shows positive results, and the tissue is taken for pathological biopsy but no abnormality is found, or it has been clearly identified as severe atypical hyperplasia or carcinoma in situ of the cervix, but the specific lesion and infiltration range are not determined, the iodine solution is used to coat the cervix and then observed, and the uncolored part is conically excised, and the excised tissue should be marked accordingly and then sent The excised tissues should be marked accordingly and then sent to pathology department for examination to determine the lesion site.