Abstract: Objective To study the relationship between nonalcoholic fatty liver disease (NAFLD) and metabolic syndrome (MS)in adults.Methods Overall 175 NAFLD patients and 54 non-fatty liver adults were assigned as survey group and contrast group.The levels of systolic blood pressure (SBP),diastolic blood pressure (DBP),waistline (WI),triglyceride (TG),fasting blood glucose (FBG),high density lipoprotein cholesterol (HDL-C) were tested and analyzed.Results The levels of SBP,DBP,WI,TG,FBG in survey group were significantly higher than those in contrast group (t=3.790,3.688,2.825,3.251,3.429,2.635,P<0.01).The level of HDL-C in survey group was significantly lower than that of in contrast group (t=2.849,P<0.01).Central obesity,high blood pressure,high blood triglyceride,low high density lipoprotein and hyperglycemia in survey group were significantly higher than those in contrast group (χ²=29.02,8.64,11.37,6.51,11.72,9.65,P<0.01).The proportion of the patients with three or more than three components of MS in survey group was significantly higher than that of in contrast group (χ²=6.15,P<0.05).And the proportion of the patients with one or without component of MS in survey group was significantly lower than that of in contrast group (χ²=26.29,P<0.01).Conclusion NAFLD is a component of MS.NAFLD could be a predictor for metabolic disorder.