Precancerous lesions of the cervix will be treated with cervical conization, which will remove the part of the cervix where the lesion occurs to achieve the purpose of preventing cervical cancer. Indications for surgical treatment: 1. Cervical biopsy has confirmed the diagnosis of cervical high-grade intraepithelial lesion; 2. Cervical biopsy is carcinoma in situ and microscopic finding of cervical cancer microinfiltration, in order to clarify the degree of lesion and guide the scope of surgery, cervical conization surgery can be performed; 3. Therapeutic conical hysterectomy is suitable for those who are young and wish to preserve the reproductive function. Precautions for surgery: 1. Choose to have surgery within 3-7 days after menstruation; 2. Patients with acute or subacute infection of vagina, cervix, uterus, pelvis, etc. should first control the inflammation before having surgery and pay attention to vulva cleaning to prevent postoperative infection; 3. Avoid sexual intercourse and tub bath for 2 months after surgery to avoid bleeding and wound infection. 3. Post-operative review: 1. If the amount of vaginal bleeding after surgery exceeds the amount of menstruation and the bleeding time exceeds 2 weeks, you need to go to the hospital immediately for examination and treatment; 2. HPV, cancer smear and colposcopy should be reviewed 3 months after surgery, and cervical cell smear and colposcopy should be done every 3-6 months after CINⅠ or CINⅡ is treated, and after 1 year of follow-up and stabilization, the examination should be done once a year; 3. Cervical cytology smear and colposcopy should be done every 3 months in the first 1-2 years, every 6 months in the 3rd-4th years, and once a year thereafter. Conization surgery is more effective in treating cervical precancerous lesions. After surgery, patients should maintain a stable mind, ensure healthy living habits, improve their immunity, and avoid unclean sexual life, which can effectively control the occurrence of cancerous lesions.