Objective : To observe effects of Erzhi Tiangui Granules on the patient of infertility with both kidney Qi and Yin deficiency, and to evaluate its effect on quality of oocytes, the number of high-quality ovum, fertilized ovum and high-quality embryo, and the clinical pregnancy rate. 目的观察二至天癸颗粒对不孕症患者肾气阴两虚证候的疗效,评定其对卵细胞质量,优质卵、受精卵、优质胚数目及妊娠率的影响。