There are individual differences in how long it takes to bleed out of a preeclamptic miscarriage, and the exact time cannot be determined. A preeclamptic miscarriage may have a small amount of bleeding for 3 to 7 days, or it may continue to bleed for ten days or even a month. There are two outcomes of preeclamptic miscarriage, one is successful in preserving the pregnancy and the other is an inevitable miscarriage. Bleeding occurs during pregnancy, after checking the normal development of the embryo, if given timely treatment to preserve the fetus, such as following the doctor’s instructions to take progesterone, vitamin E and other drugs to preserve the fetus. Generally, the bleeding will gradually decrease or disappear in 3~7 days, and most of them can keep the fetus successfully, and there will be no more blood flow after the successful preservation of the fetus. However, if the examination of the embryo development is not good or not after timely and effective treatment of fetal preservation, it may occur inevitable miscarriage, usually bleeding in the initial amount of small, with the worsening of abdominal pain, bleeding increases, may be in 3~7 days will flow out. In early pregnancy, when the situation of preeclampsia occurs, you should go to the hospital in time to do ultrasound and blood HCG, progesterone and other tests, according to the specific circumstances of the treatment given to preserve the fetus or terminate the pregnancy.