CT and ultrasound have their own advantages and disadvantages in the imaging of the liver, objectively speaking, CT examination is more accurate than color ultrasound. CT has certain advantages in determining the nature of space-occupying lesions in the liver, CT examination of the liver is not interfered by lung gas, CT images are more easily understood and accepted by clinicians than ultrasound reports, and CT films are easy to store, which is conducive to future review, such as the diagnosis of hepatocellular carcinoma, and other diseases are usually used in the enhancement of CT. Ultrasound is easier to operate and can provide a more comprehensive examination of the liver. The ultrasound scanning range is very wide, almost full coverage, but ultrasound examination of the liver also has certain limitations, such as the experience and level of the examiner, and a portion of the liver tissues obscured by the lungs are not easy to display. It is recommended to go to a regular hospital for liver examination, where a professional doctor will make a comprehensive judgment based on the patient’s specific disease to decide which examination to take.