Postpartum hemorrhage is the leading cause of death in pregnant women. The symptoms of postpartum hemorrhage include the following aspects: First, it initially presents as significant vaginal bleeding, where the bleeding may exceed 500 milliliters in a short period or 800-1000 milliliters within 24 hours, predominantly featuring fresh blood. Second, there can be abdominal pain or other symptoms caused by the underlying etiology, such as postpartum hemorrhage due to soft birth canal injuries, which can manifest as tears in the vagina or cervix. Third, there can be signs of shock, such as confusion, lowered blood pressure, and an increased heart rate, all of which are symptoms used to diagnose postpartum hemorrhage.