A black discharge after a medical abortion can be caused by residual blood or a small amount of residual tissue inside the uterine cavity. The biggest side effect of medical abortion is that it can lead to irregular vaginal bleeding and the probability of incomplete abortion. It is normal to have bleeding within 1 week after medical abortion, you can take medicines such as motherwort granules or biochemical granules to activate blood circulation and remove blood stasis, which will help improve the bleeding, and the bleeding will slowly stop after more than 1 week. If the bleeding time is more than 10 days after the medical abortion, you need to consider going to the hospital for ultrasound examination to observe the specific situation inside the uterus, and after a clear diagnosis, then consider targeted symptomatic treatment. If there is incomplete abortion, you need to take the removal of the uterus surgery.