A couple married for 3 years, the woman repeated abortion 3 times, the karyotype analysis of the couple showed no abnormality. Advised by the doctor, they tried preimplantation genetic testing for aneuploidy (PGT-A) and get 3 embryos, technicians found that there are two blastocysts without abnormal chromosomes. After comprehensive evaluation, the doctor finally selected Emb1 embryo for implantation. Now this woman is successful pregnant and all test indexes are good.