The leep knife is often used to treat cervical precancerous lesions, which generally do not induce cancer. It is a minimally invasive treatment with the advantages of less bleeding, less trauma and faster recovery. leep knife, also known as cervical electrothermal loop excision, is commonly used in clinical practice to treat cervical intraepithelial neoplasia grade II. If the postoperative pathology shows high-grade intraepithelial neoplasia or positive cutting edge, further cervical conization treatment is required. Because cervical precancerous lesions are not yet cancerous, early leep to treatment can mostly achieve better therapeutic effect or even complete cure, and most patients will not progress to cancer. After leep knife surgery, the healing process of the cervix takes about 3 months, so it is recommended to have sexual intercourse only 3 months after leep knife surgery to avoid bleeding or infection, and to keep the vulva clean after surgery and prohibit tub bathing.