Surrogacy means conceiving a baby through a surrogate mother. There is traditional surrogacy and gestational surrogacy. Traditional surrogacy refers to implanting the intended father's sperm into the surrogate's body, the surrogate mother provides the eggs, and the surrogate is the child's biological mother.

Gestational surrogacy refers to creating embryos in the laboratory and then transferring the embryos into the surrogate's uterus. In this way, the child's genes come from the providers of sperm and egg. The child is completely unrelated to the surrogate's genes and blood. For now, More people and fertility centers use gestational surrogacy as an important treatment method.