There is usually a small amount of bleeding after an abortion, equal to or slightly less than the usual amount of menstruation. It may be normal for some women not to bleed after abortion, which means that the operation is clean and smooth, and the contraction is better, so the bleeding will be less or even no bleeding, but it does not exclude the possibility of surgical failure such as missed suction and uterine adhesion. 1. Successful operation: the operation is done thoroughly, the uterus contraction is good, and the vascular closure of the placenta attachment point is better, so it is normal that there is no bleeding after abortion; 2. Surgical failure: abortion There is no bleeding afterwards, it is possible that the abortion did not remove the gestational sac, then there may be no bleeding after the abortion, it is necessary to clarify whether the abortion is successful through ultrasound and HCG examination, if the ultrasound suggests that there is a gestational sac in the uterus and the HCG level is in a rising trend, it may be missed or not sucked out, it is necessary to reschedule the abortion surgery; 3, uterine cavity adhesion: when the pregnant woman performs abortion surgery, it leads to The endometrial basal layer is damaged and the front and back walls of the uterine cavity are completely adhered, resulting in no blood discharge. In this case, the adhesions need to be separated under direct hysteroscopic view, after which an intrauterine contraceptive device can be placed to prevent re-adhesions, or hormones can be taken under doctor’s guidance to stimulate the growth of the endometrium and prevent the uterine cavity from re-adhesions. In addition to the above-mentioned reasons, non-bleeding after abortion can also be due to obstruction of menstrual bleeding due to accumulation of blood in the uterine cavity, cervical adhesions, and malposition of the uterus, often combined with discomfort such as lower abdominal distension and pain, which should be promptly communicated with the attending physician and, if necessary, ultrasound examination should be performed to clarify the condition.