Contraindications 1. pregnancy; 2. immunodeficiency diseases; 3. before ablation of cervical lesions (melted); 4. abnormal anatomy of the cervix; 5. adenocarcinoma of the cervix or adenocarcinoma in situ of the cervix; 6. vaginal inflammation. Advantages 1.No hospitalization, outpatient surgery, inexpensive and convenient; 2.It can achieve both diagnostic and therapeutic purposes; 3.And the excised tissues can be sent for pathological examination to determine whether the lesions have been completely removed by examining the marginal condition of the specimen, thus reducing the leakage rate of micro-infiltrating cervical cancer. Complications Another side effect of LEEP is that the lesion is not completely removed. The rate of positive margins in cervical specimens has been reported in the literature to be 15%, but the recurrence rate after LEEP in such patients is low (about 25%) due to the electrocautery effect during excision. Another rare side effect is cervical canal adhesion obstruction (incidence 0.5-4%), which occurs mainly in patients with deeper resected lesions. the incidence of this complication can reach 19% in patients undergoing LEEP conization.