People often ask about the difference between preconception laparoscopic IUD with cervical isthmus and transvaginal IUD, the brief is as follows: If both are transvaginal with thick silk wire, there is not much difference between preconception ligation and postconception ligation. IUD ligation is more effective than silk ligation! Benefits of laparoscopic IUD over transvaginal IUD: 1) The laparoscope can accurately lodge the IUD at the endocervix. While transvaginal IUDs cannot be tied at the endocervix. Therefore, the effect is poor. 2) No foreign body is left in the vagina during laparoscopic laparoscopy, while sutures are left in the vagina during vaginal laparoscopy, which can cause infection. (3) Pre-pregnancy annuloplasty is safe. Circumcision during pregnancy is sometimes concerned about the effect of the surgery on the fetus. The success rate of preconception laparoscopic annuloplasty with cervical isthmus is 98%.