When the gestational sac falls off, it does not necessarily mean that the pregnancy is clean, and it is also based on the time of vaginal bleeding after the abortion to determine whether the abortion is clean or not. When the gestational sac falls down after spontaneous abortion or medication abortion, it does not mean that it has been discharged cleanly, because there is still meconium tissue that develops along with the embryo after pregnancy, so when the meconium tissue is also discharged before the abortion is clean. Of course, most of the natural abortion and drug abortion has been clean, but when the vaginal bleeding after abortion more than 10 days to do ultrasound examination to clarify whether there is a residual uterine cavity. Clinical both natural and medication abortion need to pay attention to appropriate rest, appropriate increase in nutrition to promote physical recovery, but also prohibit sexual intercourse and pelvic baths for 2 weeks, but when there is a long time vaginal bleeding, abdominal pain, fever and other abnormalities need to go to the hospital in time to see a doctor.