Objective To study the relationship of serum ferritin level with metabolic syndrome in postmenopausal women. Methods 218 postmenopausal women with metabolic syndrome and 300 healthy postmenopausal women were included in this investigation, to detect FBG, TC, TG, LDL- C, HDL-C, HbA1C, INS, SF, calculated body mass index (BMI) and to measure waist circumference, blood pressure; Using HOMA steady-state model to evaluate indexes of insulin resistance (HOMA IR). Results Serum ferritin level was significantly higher in MS group than in the non-MS group(P<0.01). Serum ferritin quarterback was compared between each group, there were differences in FBG, TG, HDL-C,BMI, waist circumference,SBP, DBP(P<0.05 or P<0.01). There were no differences in age, TC, LDL-C. Serum ferritin level was significantly positive correlated with waist circumference (P<0.01), DBP(P<0.01), FBG(P<0.01), insulin resistance index (P<0.01), and negative correlation with HDL-C(P<0.01). Conclusion Serum ferritin level is significantly associated with metabolic syndrome in postmenopausal women. Waist circumference, DBP, FBG, HDL -C, insulin resistance index are closely associated with the serum ferritin.