Normal embryo freezing is normally done with two embryos in one tube and it is not usually recommended to freeze three in one tube. It is a relatively standard rule that two embryos are normally frozen in one tube when embryo freezing is carried out in hospitals and it is not usually recommended to freeze three in one tube. During an IVF transfer, doctors will transfer two embryos at a time for a woman. If three embryos are placed in one tube, the other embryo will not be able to be re-frozen after thawing, and if it is then cryopreserved, it will cause some damage to the embryo. The success rate of transferring embryos after freezing is also very high because if the woman’s body recovers to a certain extent, and then thawed high-quality embryos are transferred to the woman’s uterine cavity at the right time. Then the chances of implantation and growth and development are increased, thus increasing the chances of pregnancy. It is recommended that the couple go to the hospital for a thorough examination before the procedure, which can be done three days after the period is clean, and the frozen embryos need to follow the advice of the IVF doctor.