Abortion is not allowed in the 4th month of pregnancy, but a pregnant woman can terminate her pregnancy by inducing labor, which is done in a different way than for pregnancies up to 10 weeks. At 4 months of pregnancy, that is, around 16-17 weeks, the eyes, ears and nose of the fetus have already been formed, and the placenta has also matured, and the mother and the fetus have already been closely linked together, and have already grown to a relatively large state, at this time, not only has the placenta been fully formed, but also the fetus’s skeleton and all the organs of the body have already been clearly visible, and it would be a serious injury to the mother to abort the fetus, so it is necessary to hospitalize to induce abortion. Hospitalization is therefore required to induce labor. The pregnancy can be terminated by injecting an induced abortion drug into the amniotic cavity. Induction of labor is usually not recommended if there are no medical indications and the fetus does not have malformations of vital organs. In addition, after a woman undergoes induced abortion, she should not have sex for one week, should not take a sitz bath, and vaginal douching and administration of medication are prohibited to avoid causing gynecological inflammation.