The risk of miscarriage cannot be determined by the amount of vaginal bleeding, as long as it is accompanied by abdominal pain and bleeding, and is based on the presence or absence of the gestational sac. The amount of miscarriage bleeding varies from person to person. Some pregnant women may have more miscarriage bleeding than their menstrual period, while others may have less miscarriage bleeding than their menstrual period or the same amount as their menstrual period. Generally, vaginal bleeding after menopause accompanied by lower abdominal pain indicates the possibility of miscarriage. If the abdominal pain gradually increases and the white gestational sac is expelled from the body, ultrasound examination can be performed; if the original obvious fetal sac in the uterine cavity is now absent, it indicates miscarriage. If the vaginal bleeding is high after the expulsion of the gestational sac, there is a possibility of incomplete miscarriage and an examination and, if necessary, an evacuation procedure is required. If the vaginal bleeding is low and the uterus is closed after menopause and there is no abdominal pain, preterm abortion should be considered. If the vaginal bleeding is heavy and the uterine orifice is already open and blocked by pregnancy, inevitable miscarriage should be considered at this time. In case of sudden and heavy vaginal bleeding, placenta abruptio and placenta praevia should be considered. Placenta abruptio is often accompanied by contractions and abdominal pain. If vaginal bleeding occurs during pregnancy, you should seek medical examination to clarify the diagnosis and provide symptomatic treatment, and if necessary, fertility preservation treatment. If abortion cannot be avoided, you need to take rest and avoid straining after delivery. Take anti-inflammatory and hemostatic drugs under doctor’s guidance, prohibit sexual intercourse for 1 month, pay attention to vulva cleanliness and prevent pelvic inflammation to promote rapid recovery of the uterus.