If you have fatty liver but no abnormality on abdominal CT, it is because the degree of fatty liver is low and cannot be determined clearly by CT examination. Fatty liver is a disease in which fat accumulates in the liver cells and affects the function of the liver cells, and the main way to determine whether it is a fatty liver is through the density of the liver in the CT examination. When fat accumulates in the liver cells, the density of the liver will decrease during CT examination, and when the density of the liver is lower than that of the spleen, the diagnosis of fatty liver can be confirmed. If the degree of fatty liver is mild, i.e., less fat is accumulated in the liver cells, the change in density may not be visible in CT examination, and it may appear that the patient has a fatty liver but there is no abnormality in the abdominal CT. At this time, the patient can be further diagnosed by ultrasound, laboratory examination or liver biopsy. Patients with fatty liver are advised to seek medical treatment in time and accept treatment actively to avoid delaying the condition.