Oocyte freezing is a solution in in vitro fertilization, supporting infertility treatment for couples. Currently, egg freezing is also a technique applied to women who want to preserve their fertility because they cannot get pregnant at the present time.

Many assisted reproductive centers often worry that the success rate of frozen embryo transfer will be lower than that of fresh embryos because freezing too much and then thawing can cause the egg to die or reduce its quality. However, currently, vitrification technique is performed according to the correct procedure under the supervision of embryologists, which can greatly reduce this concern.