胚胎反复种植失败(repeated implantation failure,RIF)是阻碍辅助生殖技术临床妊娠率进一步提高的瓶颈。造成反复种植失败的原因主要为子宫内膜容受性低下,其次为胚胎发育缺陷。作为诊断宫腔病变的金标准,宫腔镜检查能直接观察内膜和宫腔的病变,同时对病变部位进行活检和处理,改善宫腔环境,从而提高反复种植失败患者的胚胎种植率和临床妊娠率。 Repeated implantation failure of embryos (RIF) is a bottleneck that hinders the clinical pregnancy rate of assisted reproductive technology. Reasons for repeated implant failure were mainly endometrial receptivity, followed by embryonic developmental defects. As the gold standard for diagnosis of intrauterine lesions, hysteroscopy can directly observe the lesions of the endometrium and uterine cavity, biopsy and treatment of the lesion to improve the uterine cavity environment, thereby increasing the embryo implantation rate and clinical Pregnancy rate.