Vaginal bleeding after an abortion is not menstruation, but the discharge of the blood remaining in the uterus after the abortion, and most of it will end within 7 days. If the vaginal bleeding lasts longer than 7 days, it may be caused by poor uterine regeneration, or it may be caused by incomplete abortion resulting in the retention of embryonic tissues, which may also prolong the vaginal bleeding. Therefore, once the vaginal bleeding is prolonged, it is recommended to go to the hospital as soon as possible to give the appropriate examination, through ultrasound to understand the size of the uterus, to understand the uterine cavity whether there is any residual embryonic tissue. If necessary, medication should be given or the uterus should be cleared clinically, and it is recommended that the tissue removed should be sent to the pathology laboratory for pathological diagnosis.