CT examination of gallbladder is more accurate than ultrasound examination in patients with gallstones. Ultrasound examination of patients with gallstones can find out the location and size of stones and whether they are combined with biliary obstruction, but intestinal distension or obesity will affect the observation of distal choledochal stones, which will lead to the observation of abdominal ultrasound examination is not clear. CT examination of the bile duct system can clearly detect the distribution of intrahepatic bile duct stones, hepatic parenchymal lesions, and dilatation of the bile duct system, which is more meaningful for the diagnosis of intrahepatic bile duct stones. Generally, abdominal ultrasound is not able to detect gallstones, and can be examined by abdominal CT. Clinically, patients with gallstones usually preferred ultrasound examination, if the condition requires, you can choose CT for further examination. It is recommended that patients with gallstones need to consult a doctor in a timely manner, and can choose the appropriate examination method under the guidance of the doctor.