The difference between ectopic pregnancy bleeding and menstrual blood lies in the following aspects: bleeding time, bleeding volume and bleeding color. 1. Bleeding time, menstrual blood is usually a vaginal bleeding phenomenon after the normal menstrual time. Ectopic pregnancy bleeding usually has a history of menopause, followed by vaginal bleeding. 2. Bleeding amount, the amount of menstrual bleeding is similar to the usual menstrual flow, there is no obvious change, and most of them will be clean in 3~7 days. Ectopic pregnancy bleeding may be a small amount of vaginal bleeding, dribbling, and there may be pieces of meconium discharged from the bleeding, once the ectopic pregnancy mass ruptured, there will be abdominal hemorrhage phenomenon, accompanied by obvious abdominal pain symptoms. 3. Bleeding color, menstrual blood is usually dark red when it first comes, and bright red when it is heavy, while ectopic pregnancy bleeding is usually brown or dark brown. Ectopic pregnancy bleeding and menstrual blood there is a certain difference, but a single symptom is not good to distinguish between identification, but also need to combine with blood HCG and ultrasound to clarify whether it is ectopic pregnancy bleeding, or menstrual blood.