Slightly dense liver parenchymal echogenicity with poorly defined travel is the term used to describe ultrasound sonograms, which often suggests fatty liver. Normal liver fat content is about 5%, when the lipid metabolism pathway of the liver is disturbed, the fat content of the liver reaches 40%-50% and fatty liver can be formed. Fatty liver can be categorized into alcoholic fatty liver and non-alcoholic fatty liver based on the presence or absence of chronic excessive alcohol consumption. In moderately fatty liver, intrahepatic blood vessels may not show up well on ultrasound, so it can be categorized as a moderately fatty liver based on the lack of clarity of the pathways. Fatty liver can be caused by alcohol consumption, diabetes, infections, pregnancy, and obesity. The treatment of fatty liver usually starts from general treatment, etiologic treatment and drug treatment. 1. General treatment: enhance the exercise and reduce the weight, adjust the dietary structure, quit drinking, etc. 2. Causative treatment: such as treating diabetes, hyperlipidemia. 3. Drug treatment: simple fatty liver in NAFLD generally does not need drug treatment; if NAFLD is combined with liver fibrosis, vitamin E and glycyrrhizic acid preparation can be taken under the guidance of doctor; alcoholic fatty liver can take polyenyl phosphatidylcholine under the guidance of doctor. It is recommended to actively consult the doctor and improve the relevant examination to clarify the diagnosis.