Numerous studies have found that 40-60% of embryos obtained through artificial methods such as test-tube baby technology have chromosomal abnormalities. These chromosomal abnormalities are the main cause of pregnancy failure and spontaneous abortion. As pregnancy age advances, embryos become aneuploidy, and live birth rate decreased significantly. Biopsy showed a high rate of chromosomal aneuploidy in both D3 and D5 stages. PGT-A can directly detect the chromosomes of embryos, which is beneficial to screen out embryos with normal chromosomes for transplantation. Through PGT-A, it can significantly increase the implantation success rate and pregnancy rate, while reducing the miscarriage rate and physical and psychological negative effects of miscarriage for women.