Current status and disposition suggestions of surplus cryopreservation embryos

In recent years, assisted reproductive technology (ART) has been widely used in clinical practice. With the growth of in vitro fertilization and embryo transfer (IVF-ET) cycle numbers, the improvement of controlled ovarian stimulation scheme and laboratory technology, resulted in a large number of surplus embryos during the ART treatment. Many of these embryos are cryopreserved for a long time by the reproductive center, causing a waste of medical resources. The management and disposition of surplus frozen embryos face a series of legal and ethical challenges. This study summarizes the current situation of surplus cryopreservation embryos, and puts forward suggestions on the disposal of these embryos based on the clinical experience of our center, so as to provide references for relevant government departments to formulate policies and regulations. Key words: Surplus embryo; Embryo cryopreservation; Embryo disposition; Ethics laws