Ultrasound of the liver and gallbladder is widely used in clinical practice, with the advantages of being inexpensive, non-invasive and simple. To have an ultrasound of the liver and gallbladder, you need to first register for the hepatobiliary surgery clinic, have your doctor issue a checklist for a hepatobiliary ultrasound, and then go to the ultrasound department to make an appointment for an ultrasound. Diseases of the hepatobiliary system can be detected by ultrasound, such as hemangiomas, cysts and other occupying lesions of the liver, and diseases of the gallbladder system, such as gallbladder polyps, common bile duct stones and gallbladder stones. It is important to fast in the morning when having an ultrasound of the liver, gallbladder, pancreas and spleen, because the gallbladder is not excreted in the fasting state and the gallbladder is full, which is conducive to the detection of gallbladder diseases.