Fresh embryo transfer is used as a treatment for infertility and is a type of IVF transfer. In theory, there is no major difference between the success rate of fresh embryo transfer and the success rate of frozen embryo transfer. However, in practice, the success rate of fresh embryo transfer, on the contrary, is lower than that of frozen embryo transfer. After fresh embryo transfer, if the pregnancy is successful, the woman’s early pregnancy reaction will be more obvious. The whole process of performing fresh embryo transfer is carried out in an environment of about 37 degrees. Fresh embryo transfer is usually performed within 1-6 days after egg retrieval, which can shorten the time needed for transfer. However, compared to frozen embryo transfer, the success rate of the transfer may be reduced due to the possible disparity between the development of the endometrium and the embryo development.