The main treatment for high cervical squamous epithelial lesions is surgery. The main treatment for cervical squamous epithelial lesions, also known as CIN grade III or cervical carcinoma in situ, is cervical lipknife conization or cervical cold knife conization. If postmenopausal women or elderly people have atrophied cervix and it is difficult to do conization, they can also choose to do hysterectomy directly at this time. If the patient is particularly young, for example, 19, 20 or 21 years old, and has a high degree of squamous epithelial lesion, and does not want to have surgery, she can be given 3 months to observe and follow up, because conservative treatment is sometimes effective for particularly young girls with high degree of cervical lesion. Therefore, the vast majority of high squamous epithelial lesions require surgery, which is mainly performed by means of conization, either by lip knife conization or cold knife conization, depending on the size of the lesion, the extent of the lesion and the surgical proficiency of the surgeon. Very few particularly young female patients with high degree of cervical squamous epithelial lesions can sometimes be treated conservatively with close follow-up.