Normally, there is no bleeding in the early stages of pregnancy, but if bleeding indicates the presence of abnormalities, the exact duration of bleeding depends on the specific situation. Usually, bleeding in early pregnancy can be caused by embryonic dysplasia, pre-eclampsia, abortion, ectopic pregnancy, biochemical pregnancy and cervical lesions. In the case of bleeding due to pre-eclampsia, most of the bleeding will clear after 3-5 days of bed rest and fetal preservation treatment. However, the development of the embryo is a dynamic process and if the treatment is not effective, the vaginal bleeding may be prolonged. In case of bleeding due to incomplete miscarriage, indolent miscarriage or ectopic pregnancy, vaginal bleeding may need to be treated surgically before it stops. Vaginal bleeding in early pregnancy is an abnormality and requires prompt consultation with the obstetrics and gynecology department and an ultrasound or blood chorionic gonadotropin test to determine the cause.