Embryo pool technique is the method of freezing the embryos obtained by collecting two or more eggs (OPU) and transferring the accumulated embryos by thawing them together. It is possible to make an embryo pool by collecting eggs multiple times using little medication (seminatural cycle) or without using drugs (natural cycle) and transferring embryos that have reached advanced developmental stages, such as blastocyst stage. This application is recommended for couples with reduced egg reserve or concomitant IVF failures. With the embryo pool method, it will be possible to achieve more treatment with less cost, a higher chance of pregnancy per embryo transfer, and reduce the negative effects of infertility on couples.