Most fatty livers have no obvious symptoms, while a few can present with vague pain in the liver area. Fatty liver is a pathological condition of excessive accumulation of fat in the liver due to a variety of factors, and is characterized by excessive storage of fat in liver cells and steatosis. The disease usually starts insidiously and develops slowly, and most of them have no obvious symptoms. In a few cases, the gradual increase in liver size may stimulate the hepatic envelope, leading to painful symptoms, such as vague pain in the liver area or distension in the right upper abdomen. In addition, symptoms such as fatigue and loss of appetite may also occur. Most fatty livers are benign and it is recommended to seek medical attention when symptoms occur. Early detection and intervention can stop the further development of fatty liver and even reverse it.