After the abortion surgery, because the uterus is slightly larger than the normal uterus, it needs to gradually contract to return to normal, the uterus contraction process will also compress the blood vessels in the uterine cavity, play a role in stopping the bleeding, in this case, you can orally take motherwort granules or new biochemical granules to promote uterine contraction, you can also intramuscular injections of hysteronin or vaginal drugs Misoprostol tablets, to promote the uterine contraction. After abortion, the vaginal bleeding is usually about 1 week, if the blood volume is more than 1 week, this situation is considered to be caused by poor uterine contraction is more likely, you need to apply drugs to promote uterine contraction, if there is no significant improvement after the use of medication, it is considered that there are residual tissues in the uterus, you also need to do ultrasound to clarify the diagnosis, and if necessary, give a timely removal of uterus, so that the uterus can gradually return to normal, and the blood will stop. Then the uterus will gradually return to normal and the bleeding will stop.