The vast majority of patients will have vaginal bleeding for a few days after the abortion, but the amount is very small, not more than the amount of menstruation, and the color is dark red. If there is no vaginal bleeding on the night of the abortion, there are several possibilities: 1. There is no vaginal bleeding because the uterus contracts better and the blood sinuses are completely closed, which is a normal phenomenon. 2. There may also be no bleeding because the functional layer was completely destroyed during the operation. This situation must be observed clinically, and if there is no menstruation by 40 days after the abortion, it must be To rule out uterine adhesions caused by endometrial damage. Ultrasound examination is recommended to understand the thickness of the endometrium and, if necessary, hysteroscopy.