The best time period for abortion is between 40-60 days after conception. At this time, the size of the gestational sac is just the right size for abortion, and the doctor can clearly see the location of the gestational sac through ultrasound, which makes it easier to remove the gestational sac. Moreover, the operation will take less time and the uterus will contract very well, the bleeding will be less and the damage to the uterus will be minimal, and the recovery will be relatively faster. If the pregnancy is less than 40 days old, the gestational sac is relatively small and the procedure is particularly likely to cause leakage and the possibility of abortion failure. If the pregnancy is more than 60 days old, the gestational sac is too large and the contraction of the uterus will be poorer, with more bleeding and a more difficult operation. After the abortion, the patient should always observe the vaginal bleeding. If there is excessive bleeding accompanied by severe abdominal pain, it is important to seek medical attention in time to understand the specific cause and to confirm the diagnosis of uterine residues through relevant examinations.