 Previous studies have preliminary proven the safety and efficacy of atorvastatin tablets in the treatment of Non-alcoholic fatty liver disease NAFLD.However, the sample size of these studies is small and most studies use B-ultrasound or CT for semi-quantitative determination of liver fat content. The defects of evaluation methods seriously affect the accuracy of the studies. Also, antioxidant agents have been proposed as a potentially effective treatment. Vitamin E is a potent antioxidant compound, which has been tested in pediatric NAFLD because of the absence of side effects. Conflicting results have been reported in clinical trials, both in children and in adults. The project intends to adopt advanced proton magnetic resonance spectroscopy 1H-MRS to non-invasively and precisely determine liver fat content and understand the change in liver fat content before and after the treatment with atorvastatin tablets or Vitamin E in NAFLD patients with abnormal lipid metabolism and type 2 diabetes. We also intend to compare the therapeutic effects of atorvastatin and Vitamin E in the treatment of NAFLD. 