The rate of blastocyst thawing and recovery is directly related to the quality of blastocysts, and the technique of thawing and recovery itself has some damage to the embryos, all of which may cause the failure of blastocyst thawing and recovery. 1. The quality of blastocysts is directly related to the thawing and recovery rate. Poor quality blastocysts have a high failure rate after thawing and resuscitation, while better quality blastocysts have a low failure rate after thawing and resuscitation. 2. Ice crystals may be formed during thawing and resuscitation, and if larger ice crystals are formed, they are mechanically damaged, and the membranous structure of cell membranes and organelles and the cytoskeleton are fatally damaged to the cells. Although blastocyst thawing and resuscitation may fail, the overall success rate of thawing and resuscitation with the current technology is still very high, if you need transplantation, it is recommended that you go to a professional reproductive medicine department.