The present study aimed to investigate the clinical value of serum anti-mullerian hormone (AMH) and inhibin B (INHB) in predicting the ovarian response of patients with polyeystic ovary syndrome (PCOS).A total of 120 PCOS patients were enrolled and divided into three groups in terms of the ovarian response:a low-response group (n=36),a normal-response group (n=44),and a high-response group (n=40).The serum AMH and INHB levels were measured by enzyme-linked immunosorbent assay (ELISA).The follicle stimulating hormone （FSH),luteinizing hormone (LH),and estradiol (E2) levels were determined by chemiluminescence microparticle immunoassay.The correlation of the serum AMH and INHB levels with other indicators was analyzed.A receiver operating characteristic (ROC) curve was established to analyze the prediction of ovarian response by AMH and INHB.The results showed that there were significant differences in age,body mass index (BMI),FSH,total gonadotropin-releasing hormone (GnRH),LH,E2,and antral follicle counts (AFCs) between the groups (P＜0.05).The serum AMH and INHB levels were increased significantly with the ovarian response of PCOS patients increasing (P＜0.05).The serum AMH and INHB levels were negatively correlated with the age,BMI,FSH level,Gn,and E2 levels (P＜0.05).They were positively correlated with the LH levels and AFCs (P＜0.05).ROC curve analysis of serum AMH and INHB in prediction of a low ovarian response showed that the area under the ROC curve (AUC) value of the serum AMH level was 0.817,with a cut-off value of 1.29 ng/mL.The sensitivity and specificity were 71.2％ and 79.6％,respectively.The AUC value of serum INHB was 0.674,with a cut-off value of 38.65 ng/mL,and the sensitivity and specificity were 50.7％ and 74.5％,respectively.ROC curve analysis showed when the serum AMH and INHB levels were used to predict a high ovarian response,the AUC value of the serum AMH level was 0.742,with a cut-off value of 2.84 ng/mL,and the sensitivity and specificity were 72.7％ and 65.9％,respectively;the AUC value of the serum INHB level was 0.551 with a cut-off of 45.76 ng/mL,and the sensitivity and specificity were 76.3％ and 40.2％,respectively.It was suggested the serum AMH and INHB levels have high clinical value in predicting the ovarian response of PCOS patients.