Eight-cell frozen embryos with or without chromosome trisomies can undergo blastocyst chromosome screening, which can be performed by thawing an eight-cell frozen fetus and continuing to culture it and then performing chromosome screening. Because eight-cell frozen embryos are generally dormant in the ice-cold liquid nitrogen environment, will not continue to grow and develop, and will not affect the genetic material, so eight-cell frozen embryos can be chromosome screening to see if there is chromosome trisomy, and can also check whether there is any abnormality of the chromosomes in the frozen embryos. If patients want to clarify whether there is chromosome trisomy in eight-cell frozen embryos, it is recommended to go to regular hospitals for chromosome screening, and clarify the corresponding precautions under the guidance of professional doctors, so as not to affect the results of the examination.