IVF usually takes 1 to 3 months, and if one is not successful it will be done several times and will take longer. IVF requires both men and women to undergo a physical examination, followed by ovulation induction, egg retrieval, embryo transfer, and embryo implantation, and if there is a problem in any of these, it may take longer to complete the IVF. Before undergoing IVF, a woman’s age and ovarian function are needed to choose whether to go for the long or short program. If the long program is adopted, it is necessary to take the downgrading injection one month in advance, and then monitor the hormone level situation in the body, and then carry out ovulation stimulation, egg retrieval, embryo transfer, and the fastest successful fertilization will take 2~3 months, or even more time. If a short program is used, ovulation, egg retrieval and embryo transfer are performed directly in the cycle, the fastest successful fertilization will take 1~2 months. IVF may not be successful once and will need to be performed several times, so the length of time varies from person to person and is not specified.