The results of correlation analysis of FSH, FSH/LH, and ultrasound parameters between the normal response group and the low response group indicated that FSH was negatively correlated with E2, EDV, OV, AFC, and PSV in 308 infertile women (r = −0.817, -0.846, -0.707, -0.845, -0.911, P < 0.01), but it was positively correlated with FSH/LH (r = 0.714, P < 0.01). The gene discussed is BRD2; the disease is Infertility.