If the abortion is not clean, it may cause damage to the uterine lining or uterine adhesions, but if the abortion is not cleaned, the damage is more serious and may cause heavy bleeding or infection in the uterine cavity, and the uterine adhesions caused by this infection are more serious, so the pros and cons must be weighed. If the residue in the uterine cavity is more than 1cm after a medical abortion, the uterus must be removed. If it is within 1cm and there is no vaginal bleeding, you can use medicine for observation and apply tonic jiale, new biochemical granules or motherwort cream and take it orally for more than 7 days. If there is no bleeding or a small amount of vaginal bleeding, you can observe and wait until the next menstrual period is clean before having an ultrasound. If there is still residue in the uterine cavity at this time, it is also necessary to remove the uterus.