Six to nine weeks of pregnancy is suitable for abortion, below six weeks too early, the embryo has not yet entered the uterine cavity, there is no way to operate, and it may even interfere with the implantation of the pregnant egg, causing ectopic pregnancy. At more than nine weeks, the fetal bones have grown out, and abortion at this time requires forceps scraping to break the bones and remove them in steps, resulting in more bleeding, longer time and slower physical recovery. At 6-9 weeks of pregnancy, the embryo has already entered the uterus, the fetus and placenta have not yet formed, and the pregnancy sac can be clearly seen under the ultrasound, with the smallest being 1.2 cm, so it will not be misdiagnosed. The procedure can be over in a few minutes and the pain experienced by the woman can be reduced to a minimum. It is important to choose the right time for the abortion to avoid unnecessary injuries.