If there is not much residue in the uterine cavity and the blood hCG is also very low, it is more likely to be discharged by taking mifepristone tablets, but if there is more residue and the blood hCG is also very high, it is very unlikely to be discharged by taking mifepristone tablets. After abortion, if there is a residue in the uterine cavity, it is best to carry out a purging operation to clear out the residual tissue, which can also reduce vaginal bleeding and intrauterine infection. However, if there is very little residue and the hCG is very low, you can consider using mifepristone tablets, which may expel the residue. However, the use of medication does not clear the intrauterine residue 100%, so the ultrasound should be rechecked one week after taking the medication, and if it is not cleared, the uterus still needs to be cleared. Some women experience adverse reactions such as nausea, vomiting, dizziness, and rash after using mifepristone tablets. It should be contraindicated in patients who are allergic to mifepristone tablets, suffer from glaucoma, asthma, and cardiac, hepatic, and renal diseases. If there is residual tissue in the uterine cavity, patients should be treated under the guidance of the doctor, and should not use the medicine on their own to avoid delaying the condition.