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囊胚培养是目前体外受精技术发展的新趋势，是胚胎的进一步筛选。囊胚移植时期是子宫内膜容受较适宜时期，可以获得较卵裂期胚胎更高的临床种植率，控制囊胚移植的数目有利于降低多胎妊娠率。另一方面，囊胚培养对胚胎实验室培养环境要求更高，同时有体外继续培养的风险，包括无可移植胚胎、基因风险等。该文通过分析囊胚培养的利与弊，探讨选择性单囊胚移植策略的可行性。“,”The new trend in the development of in vitro fertilization technology is blastocyst culture, which can further select embryos and provide the receptivity of endometrium. As a result,blastocyst transfer can acquire the higher implantation rate than cleavage stage transfer, reduce the number of the transferred embryo and decrease multiple-gestation pregnancy rate. On the other hand, blastocyst culture has higher requirement of embryonic laboratory environment,at the same time there are risks of in vitro culture,such as no eligible embryo for transfer and genetic risk. Here is to discuss the feasibility of selective single blastocyst transplant strategy by analyzing the advantages and disadvantages of blastocyst culture.