What can a woman do if she has a malignant tumor when she is not yet fertile or if she misses childbirth due to external factors, but she does not want to lose her right to motherhood? The latest technology of egg freezing and storage can help her to realize her dream. The application of oocyte freezing for IVF-assisted fertility has been found to be as effective as the application of embryo freezing in terms of clinical pregnancy rates. The egg retrieval process for egg freezing is the same as for IVF. Most of the eggs are ovulation-promoting, i.e., the patient is given ovulation-promoting drugs to expel multiple mature eggs at one time and then a puncture needle less than 2 mm in diameter is used to retrieve the eggs. The retrieved eggs are first pretreated in cryoprotectant to dehydrate them. After sufficient dehydration, the eggs are then frozen. There are two common methods of freezing: programmed freezing, in which the eggs are gradually cooled and frozen according to a set procedure and then placed in liquid nitrogen for storage, and rapid vitrification, in which the eggs are pretreated in cryoprotectant and then frozen directly in liquid nitrogen at -196°C at a very high speed. Vitrification freezing is less damaging to the eggs and is therefore the main method currently used. Thawing (resuscitation) can be performed when the frozen eggs are needed for conception. Thawing needs to be done quickly, usually by removing the eggs directly from the liquid nitrogen to room temperature, in order to prevent ice crystal formation and damage to organelles such as cell membranes and mitochondria. The resuscitation process also requires the use of a protective agent as the drastic change in temperature may lead to denaturation of macromolecules such as proteins. Eggs that survive after resuscitation are ready for in vitro fertilization and embryo transfer. Currently, there are two main groups of people who are suitable for egg freezing. The first is those who have a medical condition, such as women with cancer, who can have their eggs removed and frozen before undergoing radiotherapy to preserve the chance of having their own offspring. The other group is those who are fertile but for some reason are unable to have children now and can have high quality eggs removed and stored at a young age. In addition to this, some women in dangerous professions are also suitable for egg freezing: e.g. X-ray doctors, astronauts, etc., whose fertility may be affected by exposure to excessive radioactive and toxic substances. There are also women who are older or who do not have the ability to ovulate who are afraid of the accidental death of their only child and whose worries will be solved if their eggs are stored in advance. It is worth noting that the future direction of egg freezing is to become a high-end service for special groups of people, it will not be used on a large scale like sperm freezing, it is not advocated for healthy, fertile women to have their eggs stored, fresh eggs are still better than frozen ones.