Clinically, abortion basically does not show a complete gestational sac, because abortion uses the principle of artificial negative pressure to suction out the tissues in the uterine cavity, so most of the tissues suctioned out are already broken, and villi can be found in the suctioned out tissues, but a complete gestational sac will not be seen. It is also recommended that after the abortion, the vaginal bleeding will be cleared for about 7 days. Therefore, this time must keep the vulva clean, and to change sanitary napkins, so as to avoid the infection of pathogenic bacteria, and within a month can not have sex, and in 10 days after the abortion, must go to the hospital to review the ultrasound, the main purpose is to understand the abortion has been done cleanly, in the uterine cavity whether there is still residual tissue and uterine recovery situation is normal.