The short-acting long protocol refers to the process of obtaining the right number of eggs using down-regulating and ovulation stimulating medications within a few days of the start of the menstrual period, with ovulation monitoring and hormone testing, and then retrieving the eggs when the follicles are mature. The duration of medication is relatively short compared to the long-acting long program. In the process of IVF, in vitro fertilization is a commonly used method to promote egg expulsion through medication control, which can be divided into long-acting and short-acting protocols, of which the short-acting protocol is more suitable for young women with normal ovarian response, and the specific duration of the medication varies from person to person. Generally speaking, women can start the injection within a few days after the start of the current menstrual period, and then use ovulation-promoting drugs appropriately according to the actual situation. During this period, the doctor will monitor the growth of the follicles from time to time and take care to check the estrogen level so that the amount of ovulation stimulating drugs used can be adjusted at any time. After the follicles have matured, women can take ovulation injections under the guidance of the doctor, and after the injection time reaches 36 hours, the egg retrieval operation can be carried out. Compared with the long-acting long program, the short-acting long program has a different way of using drugs, and the time for down-regulation and ovulation promotion will be relatively shorter. Since different women have different ages and physical conditions, they should actively cooperate with their doctors when choosing the IVF program and should not choose it on their own.