Nonalcoholic fatty liver disease（NAFLD） refers to excessive excess fat deposition in the liver in theabsence of excessive alcohol consumption and other specific liver damage factors

which is associated with metabol-ic syndrome and insulin resistance. It is one of the most common liver diseases worldwide and has an increasing inci-dence. With disease progression

NAFLD patients may develop nonalcoholic steatohepatitis（NASH）

liver cirrho-sis

and hepatocellular carcinoma. The development and severity of liver fibrosis is a key prognostc factor forNAFLD

and it is very important for NAFLD patients to early evaluate

dagnose

and treat liver fibrosis. This reviewsummarizes the pathogenesis

diagnosis

and treatment of liver fibrosis in patients with NAFLD.