Judging solely on the basis of the embryo being 4-cell and 5-cell, 5-cell is slightly better. In terms of the grade of the embryo 4-cell and 5-cell, both are just up to standard, but 5-cell is relatively more successful. The quality of the embryo is related to the quality of the sperm and egg, so in the preparation stage, both men and women need to start conditioning their bodies to improve the quality of the sperm and egg so that the quality of the fertilized egg formed by the combination of sperm and egg can be improved, which is more conducive to raising good blastocysts. When doing IVF, it is recommended to go to regular hospitals, so that there are better embryo cultivation rooms, and the doctor’s skills are relatively high, but you need to follow the doctor’s advice, with the doctor actively conditioning, can improve the chances of conception. If you have any other questions, it is recommended to consult a professional doctor for guidance.