There is no obvious blood flow signal with residue whether the need to clear the uterus should be analyzed according to clinical symptoms and the size of the residue. Women after abortion ultrasound examination of the uterine cavity with residue but no obvious blood flow signal, such as residue is small, less than 1cm in diameter, and did not cause abdominal pain and vaginal bleeding and other clinical symptoms, generally do not need to clear the uterus, can be taken under the guidance of the doctor motherwort granules or new biochemical granules and other drugs to promote uterine contraction, to help residue as soon as possible discharged. If the diameter of the residue is more than 1cm, and there is abdominal pain, lumbar pain and vaginal bleeding or vaginal bleeding and other clinical symptoms, it is necessary to go to the hospital in time to do the surgical treatment of the uterus, and after the operation to give levofloxacin, metronidazole and other anti-inflammatory drugs to prevent infection. After the abortion residue should pay attention to do a good job of review, under the guidance of the doctor according to the specific circumstances to give reasonable treatment.