Abortion in the third trimester of pregnancy is more harmful to a woman’s body. Because in the third trimester, the enlarged uterus has grown out of the pelvis, and the fetal limbs, spine and skull have developed, the placenta has attached to the uterine meconium and grown, and the amniotic fluid has formed, the process of abortion can easily lead to increased chances of cervical laceration, postpartum hemorrhage and amniotic fluid embolism. In the third trimester of pregnancy abortion can easily lead to residual placenta and membranes, which need to be treated again with uterine evacuation. After the operation, women need to be given medication to promote contractions, stop bleeding and anti-infection, and generally need to take a month’s rest and increase nutrition before they can recover. If a woman needs abortion treatment in the third trimester for special reasons, it is best to go to a regular hospital and follow the doctor’s instructions to improve the preoperative examination and have no contraindications before doing the abortion treatment.