Assessing the health of the liver based on ultrasound results alone is incomplete. Liver ultrasound is currently the preferred modality for liver imaging due to its quick, safe and affordable benefits. Liver ultrasound examines the liver through ultrasound and can effectively identify fatty liver, cirrhosis, cholecystitis, gallstones, intra- and extra-hepatic bile duct stones, gallbladder polyps and other diseases. However, ultrasound results alone are not sufficient to assess the overall health of the liver, excluding diagnostic errors caused by human factors and other incidental factors (e.g., gas filling in the stomach and intestinal cavity), mainly because it is difficult to identify some liver diseases, such as viral hepatitis, autoimmune liver disease, mild fatty liver, and liver cancer with a diameter of less than 1cm. Therefore, on the basis of the ultrasound results, it is necessary to combine the patient’s clinical symptoms and signs, CT or MRI (magnetic resonance imaging) imaging, liver function tests, biomarkers and other means of comprehensive judgment.