The advantage of having an IUD directly after abortion is that it reduces the chance of a surgical operation, avoids the chance of pathogenic infection and minimizes the danger. If the contraction of the uterus is not good and there is a lot of bleeding, the IUD should not be inserted immediately after the abortion. The purpose of the examination is to understand the recovery of the uterus, whether there are residues in the uterus, and to understand whether the position of the IUD is normal. It is recommended to have an ultrasound examination after the first menstrual period after abortion. The purpose is still to understand the position of the IUD, because the first menstrual period after abortion may increase to avoid the position of the IUD from shifting, so you must go for an examination.