Aim To investigate the correlation between metabolic syndrome(MS) and benign prostatic hyperplasia(BPH).Method We selected 197 cases who were diagnosed as BPH in the first affiliated hospital of Xinjiang Medical University Cadres Ward,the male subjects and Urology,and from November 2008 to October 2009 to investigate the correlation between MS and BPH.Results Analysis showed that the MS and its components such as: obesity,HDL,high blood sugar,hypertension had statistical differences with BPH(P<0.05).The prostatic volume in group of BPH with hypertension with diastolic biood pressure ≥90 mmHg was significantly higher than those with diastolic blood pressure <90 mmHg(P<0.05).The IPSS and prostatic volume in group of BPH with abnormal free blood glucose were significantly higher than those with normal free blood glucose(P<0.05).Conclusion The MS is closely related with BPH,which may be a risk factor of BPH.