Sperm freezing is a technique to preserve male fertility by freezing sperm samples for storage in a low temperature environment so that they can be thawed and used when needed in the future.

Men suffering from azoospermia, weak sperm, oligospermia, can be extracted by testicular sperm extraction, the precious high vitality sperm frozen.

In theory, sperm can be stored indefinitely in liquid nitrogen, but the actual storage period is generally recommended within 10-20 years, which can ensure the quality and vitality of sperm.

When frozen sperm needs to be used, it is thawed and quality evaluated to determine whether its viability and function are intact. Subsequently, depending on the circumstances, artificial insemination or in vitro fertilization techniques may be employed for reproductive purposes.