Aim To analyse the impact of metabolic syndrome(MS) on brachial-ankle pulse wave velocity (BaPWV) in a group of health examination people.Methods The medical examination and blood chemical analysis and related metabolic items were completed in these medical examination people.The brachial-ankle pulse wave velocity (BaPWV) was assessed by using a Form PWV device.Using the standard of MS,defined by the Chinese Diabetes Society in 2004,the people were grouped by the different Metabolic level.The BaPWV were compared among these groups, and the correlation between the BaPWV and the metabolic abnormality was analyse.Results The prevalence of MS was 13.26%,in which the metabolic abnormality in four items was 2.43%.With the increase of abnormal metabolic items and age,the BaPWV increased gradually(P<0.05) and were higher than that of the control group.The same tendency appeared in different sex groups also.Although the single metabolic items were abnormal,compared with the control group,the increase of the BaPWV was significant(P<0.05),especially in the hypertension group.The subjects were also classified into three groups based on the age(<40 years old group,40～59 years old group and>60 years old group).Besides the aged group(>60 years old group),the BaPWV increased with the increasing number of the metabolic abnormality.The correlation between the BaPWV and the metabolic abnormality was significant(left r = 0.42,P<0.01,rightr=0.45,P<0.01).Conclusion The BaPWV and the prevalence of the MS increased with age.All items of the metabolic abnormality were risk factors of the BaPWV increase.The more the metabolic abnormality items were,the more the BaPWV increased.