An alpha-fetoprotein that is twice as high as normal, with slightly elevated triglycerides, slightly elevated cholesterol, and slightly low LDL cholesterol, may be indicative of fatty liver, but the diagnosis needs to be made in the context of the patient’s medical history and imaging studies. Elevated alpha-fetoprotein is usually indicative of hepatitis or tumors, and slightly elevated triglycerides and elevated cholesterol are more consistent with fatty liver. Patients with fatty liver need to be diagnosed by combining the results of ultrasound and CT imaging. Ultrasound can indicate fatty liver according to the enhancement of anterior echo, attenuation of far-field echo, and unclear display of intrahepatic biliary structures; CT examination mainly shows the decrease of the density of the liver. If alpha-fetoprotein is twice as high as normal, triglyceride slightly high cholesterol is slightly high, and low-density cholesterol is slightly low, further examination should be carried out promptly to determine whether it is fatty liver.