During the natural cycle, a group of follicles in a woman’s ovaries “wake up” and begin to develop each month. Normally, different follicles have different hormonal sensitivities, so in a natural menstrual cycle, only 1-2 follicles will “stand out” to mature and ovulate! But! However! With a sea of “eggs”, we don’t know exactly when this one good egg will be expelled, so the possibility of “catching” her is much reduced, and other follicles lacking “nutrients” will also wither. The other follicles that lack “nutrients” will also shrink and disappear …… So, during the IVF ovulation process, we exogenously give the follicles enough “nutrients” to make this batch of follicles “sunny and rainy”. In this way, a large number of eggs are produced. So the question is, how do you know which one is right for you when there are so many different ovulation options that you have heard of? Is it just a matter of price? How can you choose the right ovulation program for you? First of all, let’s take a look at what ovulation promotion programs are available: long agonist program, antagonist program, super long program, short program, microstimulation program, luteal phase promotion program, PPOS program, natural cycle program and so on. Isn’t it a little confusing …… It’s okay, Professor Li Yuan will first explain a few common ovulation protocols: 1. Long agonist protocol is one of the most commonly used ovulation protocols. It is suitable for patients who have normal ovarian function and will respond appropriately to ovulatory drugs. The advantage of the agonist long regimen is that it has adequate down regulation and better controlled ovulation, especially for women with normal ovarian function. 2. Antagonist regimen, which is a new generation of ovulation promotion regimen, has emerged later than other regimens, but its clinical application is increasing day by day. It is suitable for patients with normal ovarian function as well as poor ovarian function, and more suitable for patients with polycystic ovary syndrome. The duration of this regimen is also relatively short, about 10-15 days before and after, with low incidence of OHSS, good clinical outcome and relatively low cost. 3. Ultra-long regimen, as the name suggests, is a regimen that requires a longer time. It is generally suitable for people with endometriosis, adenomyosis, polycystic ovary syndrome or those who have poor results with the normal long protocol, which usually takes 2-3 months. This regimen improves the intrapelvic environment, reduces the risk of ovarian hyperstimulation and increases the pregnancy rate. In addition to these three commonly used ovulation regimens, there are other regimens for different situations: Short regimen: mainly for patients who are older, have poor ovarian reserve, or who do not respond well to the long regimen; Microstimulation regimen: mainly for patients who are older, have poor ovarian reserve, who have had estrogen-dependent disease and should not have large amounts of gonadotropin for ovulation, and for patients who have had poor results with other regimens. This regimen is indicated for patients with low ovarian response, hypersensitivity to antagonists, and poor results with other ovulation regimens. Natural cycle regimen: for patients with very poor ovarian function or who do not have available embryos with other regimens or who have had estrogen-dependent disease that makes gonadotropin ovulation inadvisable. When it comes to relationships, we know that what works for you is what matters most. The same is true for the choice of ovulation protocol. You should communicate fully with your doctor, who will choose a suitable ovulation protocol according to your specific situation. This is a very important step on the way to help you get pregnant! So, there is no better or worse option, but the best one is the one that suits you!