Do abortion, divided into ordinary abortion and painless abortion, the most suitable size in pregnancy between 55-75 days. If the pregnancy time is too short, because the gestational sac is relatively small, do abortion is easy to lead to leakage suction, it is easy to lead to abortion failure, if the month of pregnancy is large this abortion is easy, but may bleed more on the health of the body is not good. At present, there is a kind of guided abortion, the use of a wider range, as long as the ultrasound can be found in the uterine cavity of the gestational sac can be done, because it is done under direct vision, the operation is more delicate and precise, the damage to the endometrium can be minimized, less bleeding after the operation, is not easy to inflammation and infection, just cost a little more.