The indications of third generation IVF technology are as follows: 1. Those with abnormal chromosome number or structure are prone to recurrent miscarriages. Through the third generation technology, chromosomally abnormal embryos can be ruled out, and chromosomally normal embryos can be transplanted into the mother’s body to obtain a healthy fetus; 2. Couples with sex chromosome-linked hereditary diseases, such as hemophilia, can be eliminated from the embryos with hemophilia through the third generation technology of PGD, and obtain healthy babies; 3. Through genetic diagnostic technology, single-gene disorders or carriers are ruled out, and obtaining a healthy progeny is guaranteed.