Cervical carcinoma in situ can be treated by surgical excision. Cervical carcinoma in situ is not cervical cancer, but belongs to pre-cancerous cervical lesions, which may progress to cervical cancer. It can be treated by cervical conization surgery, commonly used methods include cold knife conization, laser conization and Lipo knife conization, and hysterectomy can be considered if there is no need for childbearing or combined with other uterine diseases, such as uterine fibroids. Patients with carcinoma in situ of the cervix need regular review after surgery to avoid recurrence and cancer, and most of them achieve clinical cure.