The success rate of in vitro fertilization needs to be specific to the individual. The success rate of in vitro fertilization is related to the individual’s situation, the reason for conducting in vitro fertilization, the embryo to be transferred, the age, the institution where the in vitro fertilization is done, and so on, and all of these will affect the success rate of in vitro fertilization. 1. Reason for IVF: If the male partner has problems or the female partner needs IVF due to tubal factors, the success rate will generally be higher. If the female partner has decreased ovarian function, endometriosis or polycystic ovary syndrome, the success rate is low. 2. Embryos transferred: Screened high-quality embryos have a higher success rate. 3. Age: If the female partner is under 35 years old, the success rate of IVF is higher; if she is over 35 years old, the success rate gradually decreases with the increase of her age, and if the male partner is too old, the success rate will also be reduced. 4. Institutions: The chances of success will also be higher in formal and technologically high-end reproductive institutions. If a woman has infertility and needs assisted reproduction, it is best to do it as early as possible in a formal reproductive institution to avoid delays, resulting in a lower success rate.