Abstract: Objective：To investigate the relation between the serum testosterone level and basis ovarian endocrine and infertility treatment condition during IVF cycles in normal menstrual cycle women. Methods：495 cases who had IVF-ET cycles from March 2011 to July 2011 in our center were collected. Cases were divided into groups with different parameters, such as age, basis FSH, basis LH，FSH /LH ratio，and basis E2. Testosterone levels, and treatment of IVF cycles, were meticulously compared. Results：The testosterone levels were statistically different in those sub-groups which divided with age and basal FSH/LH ratio （P＜0.05）, while they were not statistically different in those sub-groups divided with basis FSH，basis LH，FSH/LH ratio， and basis E2（P＞0.05）. Among those groups with different testosterone levels，the numbers of retrieval oocyte and portable embryos in the IVF-ET cycles were significantly different（P＜0.05）. Conclusions：Serum testosterone levels were related to some classic indicators of ovarian reservation，such as age，FSH/LH ratio and oocyte number of super-ovulation. The serum testosterone levels can also influence the IVF-ET treatment results in women with normal menstrual cycle.

Key words: Testosterone, Fertilization in vitro, Embryo transfer, Ovary, Pregnancy outcome, Menstrual cycle