Induced abortion mainly includes medication abortion and surgical abortion. No matter what kind of abortion, there are certain hazards to the reproductive health of pregnant women. Common hazards are as follows: 1, anemia: after abortion there will be varying degrees of vaginal bleeding, vaginal bleeding for a long time can last 2-3 weeks, or even 1-2 months, long-term chronic blood loss can cause anemia. 2. Infection: Due to long-term chronic blood loss, it can cause the body resistance to decline. Bacteria can be retrograde from the vagina to cause endometrial inflammation. Multiple pregnancies with multiple abortions, multiple intrauterine operations or improper maintenance increase the risk of infection, such as acute endometritis and pelvic inflammatory disease. 3, menstrual disorders: the main component of anti-pregnancy drugs is anti-progestin, which can inhibit the function of the ovaries and affect the growth and development of follicles and even interfere with ovulation. After abortion, menstrual disorders may occur in some pregnant women, manifested as shortened or prolonged menstrual cycle and increased menstrual volume. 4, uterine perforation, cavity adhesion: is a serious complication of abortion, prone to occur in lactating pregnant uterus, scarred uterus after cesarean delivery again pregnancy. Multiple abortions can increase the risk of cervical or uterine adhesions. 5, affect future pregnancies: Repeated pregnancies and repeated abortions in women of childbearing age will cause repeated damage to the endometrium and uterine cavity adhesions, and when a normal pregnancy is needed, infertility will occur, and after pregnancy, placenta praevia will easily occur, which can cause prenatal hemorrhage and even habitual miscarriage, and at the same time, increase the risk of preterm labor and ectopic pregnancy. In conclusion, abortion is a remedy after the failure of contraception and can cause certain harm to women, and women without pregnancy plans are advised to take effective contraceptive measures.