Bleeding in pregnant women may be due to conditions such as preeclampsia, embryonic abruption, placental abruption, etc. It is recommended to go to the hospital in time for examination. 1. Pre-eclampsia: If the chromosomal abnormality of the fetus, or affected by infection and other factors, pregnant women may experience vaginal bleeding in early pregnancy, at this time need to be actively carried out to protect the fetus treatment. 2. Embryonic arrest: If the fetus dies in the uterus, it will lead to placental abruption, which will cause vaginal bleeding. 3. Placental abruption: In late pregnancy, due to factors such as placenta praevia, the placenta may detach, manifesting itself in redness and other symptoms of labor, and at this time, it is necessary to prepare for induction of labor. When pregnant women bleeding, need to go to the hospital in a timely manner, under the guidance of the doctor to carry out targeted treatment, avoid delay, to prevent delays in the condition.