If the fetus develops normally in the case of preeclampsia, the bleeding usually lasts for 3 to 7 days, and the bleeding time can be reduced by fertility preservation treatment. If the development of the fetus is abnormal, the bleeding will be endless. 1. Normal development of the fetus: If the development of the fetus is normal, the vaginal bleeding of preeclampsia can be stopped by itself in 3-7 days, or you can consult the doctor and use birth control drugs, such as intramuscular injection of progesterone. 2. Abnormal development of the fetus: If the abnormal development of the fetus caused by preeclampsia, it will further cause spontaneous abortion, at this time, preeclampsia abortion fertility preservation treatment is ineffective, the body will exclude the underdeveloped gestational tissues, resulting in vaginal bleeding for half a month or so, and the bleeding does not end. Therefore, the bleeding time of preeclampsia is determined on a case-by-case basis. If the development of the fetus is normal, it is necessary to actively preserve the fetus and treat it to relieve the symptoms of bleeding. Fetal abnormality should be actively treated and the pregnancy should be terminated if necessary. Specific cases need to be actively handled under the guidance of specialists.