Visual abortion is to put a straw on the part of the embryo, and then attract it purposefully, so that the embryo can be sucked into the straw quickly, which will destroy the embryo and then excrete it. This is the progress of abortion technology and the method of direct abortion. With the development of science and technology, there are hysteroscopic abortion, TV abortion and B-ultrasound abortion. All methods of abortion under direct vision are collectively called visual abortion. In the past, abortion was done blindly by doctors' feelings, and embryos were sucked into straws by doctors' experience.