Controlled ovarian hyperstimulation (COH) is an important component of in vitro fertilization-embryo transfer(IVF-ET), more eggs are obtained but the endometrial receptivity may also be affected from the morphology, hormone receptors, paracrine, immune, etc. Hormone regulation,anticoagulants, mechanical stimulation, Viagra, Chinese medicine and other interventions may improve endometrial receptivity.%正常子宫内膜仅在一个极短的关键时期允许胚胎着床,称为“植入窗”或“种植窗”[1].种植窗期,在体内多种激素特别是卵巢激素调控下,子宫内膜的形态学超微结构、特定基因表达、蛋白分泌等方面都发生时空特异性的系列改变,使子宫内膜的容受性达到最佳状态,以利于胚胎的定位、粘附和着床.控制性超促排卵(COH)改善和推动了辅助生殖技术的发展,该过程中,通过促排卵药的使用可以获得较多枚卵子,但是,这些药物有可能会影响人体多种内源性激素的分泌和平衡,使雌、孕激素异常分泌,干扰种植窗内膜的形态、功能,从而影响子宫内膜容受性,进而影响胚胎的着床,降低妊娠率[2,3].
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