Whether the amniotic fluid comes out to be able to preserve the fetus needs to be decided according to the condition of the fetus, the mother and the amniotic fluid, in addition to the week of pregnancy to decide whether the need for fertility preservation treatment. For pregnant women less than 24 weeks, abortion preservation is generally not recommended because of the low chance of fetal survival; for pregnant women between 24 and 27+6 weeks, abortion preservation needs to be cautious; for pregnant women between 28 and 33+4 weeks, there is no contraindication to abortion preservation, abortion preservation can be given; those whose gestational weeks are greater than 34 weeks will not be treated with abortion preservation. In addition to the limitations of gestational weeks, if there is placental abruption, intrauterine distress, amniotic fluid, amniotic fluid odor suspected chorioamnionitis, it is not recommended to continue the treatment of fetal preservation. If rupture of fetal membranes occurs in the clinic, it is necessary to consult the doctor promptly and follow the medical advice.