CYP17A1 rs743572 polymorphisms were found to be negatively associated with PCOS risk under dominant model (p = 0.017, OR = 0.83, 95%CI 0.72–0.97, I2 = 74.80%, Pheterogeneity = 0.000) in the general population while neither CYP19A1 rs2414096 polymorphisms (p = 0.578, OR = 0.87, 95%CI 0.54–1.41, I2 = 95.90%, Pheterogeneity = 0.000) nor SHBG rs6529 polymorphisms (p = 0.752, OR = 0.99, 95%CI 0.94–1.05, I2 = 60.90%, Pheterogeneity = 0.012) was associated with PCOS susceptibility under dominant model in the general population. This evidence concerns the gene SHBG and polycystic ovary syndrome.