Objective To study the effects of the Lipid Metabolism and Anti-oxidation on PCOS rats.Method PCOS models were established using rats.The kind of animal model was used to observe body weight,estrous cycle,Lipid Metabolism,Leptin,SOD and MDA.Results Lipid Metabolism,leptin level and MDA was significantly higher in PCOS model group.Conclusion PCOS can cause dyslipidemia in rats,reducing the role of oxygen free-radical oxidation.