Bleeding after pregnancy is common in miscarriage, ectopic pregnancy, preterm labor, etc. Among them, preterm miscarriage and preterm labor are mostly viable, while the rest are more difficult to be preserved. 1. Miscarriage: The termination of pregnancy before the fetus is viable is called miscarriage. Among them, preeclampsia, the symptoms disappear after active treatment can continue to pregnancy, if the vaginal bleeding increases, the pregnancy should be terminated. The rest of the miscarriage types such as inevitable miscarriage, incomplete miscarriage, etc. are difficult to preserve the fetus. 2. Ectopic pregnancy: clinical manifestations are abdominal pain and vaginal bleeding after menopause. Once diagnosed, the pregnancy should be terminated promptly. 3. Pre-eclampsia: Before labor starts, there are often some symptoms that indicate that labor is about to start, and a small amount of bleeding may occur. The fetus can be delivered normally. If bleeding occurs after pregnancy, the patient should be admitted to the hospital in time, so as to clarify the cause of the bleeding, and be treated under the guidance of the doctor, and the pregnancy should be terminated if necessary.