Many patients who are about to have an abortion share a common concern: “whether the procedure will cause uterine damage and lead to infertility”, which is indeed an issue that both medical professionals and patients cannot avoid. Poor intraoperative or postoperative management of abortion can lead to recent or long-term complications such as incomplete abortion (unclean flow), endometrial damage, uterine infection, uterine adhesions, and infertility in patients. The current situation of abortion in China is that there is a large flow of people, many unmarried and infertile young women, and many repeat abortions, so how to ensure the quality of abortion surgery and reduce the occurrence of complications is not just a medical problem but also a social problem. The compound short-acting oral contraceptive pill, invented in the late 1950s, is the most intensively researched, most funded, most used, and safest drug, and has been recognized by various countries around the world as one of the top ten global inventions of the 20th century. In China, due to the policy orientation, women who have given birth do not have a high degree of knowledge about it and choose family planning measures after giving birth, mainly the intrauterine device (IUD), while in advanced countries in Europe and America, more than half of women choose the pill as the birth control method, and its highly effective contraceptive rate, regular menstruation after taking the pill, relief of dysmenorrhea, reduction of menstrual flow, prevention of endometrial cancer, ovarian cancer, and no effect on the offspring (no teratogenicity to the next generation), have been It has been widely confirmed and recognized. Abortion is a remedial measure for family planning, and the endometrial lining and embryo are scraped during the procedure, which may cause endometrial damage and bacterial infection, while oral contraceptive pill immediately after the procedure can promote rapid endometrial repair, form cervical mucus plugs, block vaginal bacterial upstream infection, reduce pelvic congestion, increase uterine smooth muscle sensitivity, speed up uterine recovery, shorten vaginal bleeding time, and prevent This is the most effective measure to prevent post-abortion complications. Our hospital provides the latest generation of contraceptive pills (Eusyn) to patients who have had abortions to prevent post-operative complications, and studies have proven that it is more effective when taken orally for 3 months.