After the drug abortion of the uterine cavity residue is not absorbed, the residue is not stripped complete meconium, or meconium mixed with blood. There are two main ways to eliminate this uterine residue after medication abortion: 1, using drugs to promote uterine contraction, killing the activity of the residue, prompting the residue to peel off and discharge out of the vagina. 2, after the failure of the use of drugs, you can choose to clear the uterus surgery, the residue will be removed directly. So when the patient after drug abortion, within 7-10 days must do ultrasound for monitoring, and according to the size of the residue whether there is active blood flow signal, whether rich and many other factors, comprehensive judgment of the specific treatment plan. There is a special situation when reviewing the ultrasound after medication abortion, the ultrasound will suggest that there is a liquid dark area in the uterine cavity, this situation does not belong to the uterine residue, but belongs to the poor uterine recuperation or infection caused by the accumulation of blood in the uterine cavity. When there is blood in the uterine cavity, the blood can be absorbed in the uterine cavity if it is treated actively.