It is usually recommended that the patient be rechecked about 7-10 days after the abortion procedure. This is because after an abortion the patient will have vaginal bleeding, mainly due to the accumulation of blood in the uterine cavity and the meconium to be expelled from the body. This vaginal bleeding takes 7-10 days to clear up, so it is recommended to review in 7-10 days. If there is no residue in the uterine cavity after the patient’s review, then it means that the patient’s abortion has been done very successfully, and as long as the patient is able to have a normal menstrual period, there is no need for further review. If the patient is still bleeding 7-10 days after the abortion, and there is residue in the uterine cavity by color ultrasound, we should choose the medicine according to the size of the residue, or carry out the purging surgery again. Because the residue in the patient’s uterine cavity for too long, easy to cause infection or uterine adhesions, the patient’s body and reproduction is very unfavorable. In this case, after treatment, the interval of 7-10 days need to be re-examined.