People who have a normal liver and gallbladder ultrasound can usually have it done once a year. Liver ultrasound is a non-invasive examination commonly used to check whether there are any lesions in organs such as liver, gallbladder, spleen and pancreas, and it is generally sufficient for normal people to have it done once a year, for people with a history of long-term alcohol consumption and fatty liver disease to have it done once a half yearly, for patients suffering from early stage of cirrhosis and chronic liver disease to have it done once a yearly in every three months or so, and the number of times for cirrhosis patients with decompensated stage of cirrhosis to have the examination done depends on the progression of the disease. Through liver and gallbladder color ultrasound, looking at the liver can show whether its size and shape are normal, whether the echoes are even and whether there are abnormal occupying structures inside the liver; looking at the gallbladder can get the size of the gallbladder and the thickening of the gallbladder wall, and it can also examine the bile duct system and the venous system, such as measuring the diameter of the bile ducts and detecting the speed and diameter of the portal vein’s blood flow, and so on. Liver and gallbladder ultrasound is non-invasive and has a high detection rate of lesions in the liver and gallbladder, so it is recommended that normal people undergo routine checkups once a year.