The earliest IVF transfer is 3 days after egg retrieval. If you are counting from the beginning of the IVF the fastest time to transplant is in 2 to 3 months. When IVF is performed, it is usually possible to transplant three to five days after egg retrieval, so the fastest it can take is three days. This is because after the egg retrieval, the combination of the egg and sperm will take some time, and the three-generation test tube will also screen the chromosomes, and the chromosome examination of the embryo will also take some time. If the three-generation IVF has just begun, then generally need to be first for ovulation and then can retrieve the eggs, the general time for ovulation needs 1~2 months, the specific time needs to be decided according to the program, the long program for ovulation needs about 45 days, the short program for ovulation needs about 65 days. So the fastest time for transplantation is after 48 days. When the third generation IVF is transferred, generally the doctor will need to choose the time of transfer according to the patient’s physical condition, if the physical condition is not suitable, then the embryo may be frozen and thawed, so the time of transfer will be extended.