Fatty liver is not always present with abnormal liver function. Fatty liver is mostly found during physical examinations, especially in obese people, but often the liver function is normal in venous blood. In the case of severe fatty liver, there may be elevated transaminases, and liver function abnormalities are most often seen in patients with viral hepatitis or alcoholic liver disease, drug-related liver damage, etc. People with fatty liver are advised to make sure to lose weight, and if necessary, they can cooperate with their doctors to use liver protection and enzyme-lowering medication. If there are liver function abnormalities, and it is not clear what causes the liver function abnormalities, you need to cooperate with your doctor to give perfect screening for related causes, such as viral hepatitis, alcoholic hepatitis or autoimmune hepatitis, etc. You need to consult a specialist for details.