Metabolic associated fatty liver disease (MAFLD), which can lead to liver fibrosis, cirrhosis, liver failure and even hepatocellular carcinoma, poses a significant burden on society. With the improvement of living standards and changes in dietary habits, MAFLD patients show a younger and increasing trend, but there is still no specific drug. The clinical features and prognosis of MAFLD may be different with different metabolic disorder phenotypes and treatment measures. Therefore, further systematic study of the clinical characteristics and prognosis of MAFLD patients will be of great significance for the formulation of corresponding clinical prevention and treatment strategies.