Ultrasound examination of liver, gallbladder, spleen and pancreas is of great significance: 1. It can be used for physical examination of liver, gallbladder, spleen and pancreas without clinical symptoms, so as to determine whether the liver, gallbladder, spleen and pancreas are normal or abnormal.2. It can be used for examination of abdominal clinical discomfort.3. It can be used for follow-up observation before and after treatment of some known diseases.4. It can be used for certain scientific research on liver, gallbladder, pancreas and pancreas.5. Ultrasound examination of liver, gallbladder, pancreas and spleen routinely can detect The diseases that can be detected and diagnosed by ultrasonography include common liver diseases such as fatty liver, hepatitis, cirrhosis, sludge liver, liver cysts, polycystic liver, liver abscess, hepatic hemangioma, hepatocellular carcinoma, liver rupture, metastatic tumor and other common diseases as well as some congenital anomalies; common diseases of biliary tract, including cholecystitis, gallbladder stone, gallbladder polyp, adenomyosis of gallbladder, gallbladder carcinoma, biliary tract obstruction and other common diseases; common diseases of spleen, including splenomegaly, splenic rupture, splenic Common diseases of the spleen include splenomegaly, splenic rupture, splenic tumor, metastatic tumor, etc. Common diseases of the pancreas include pancreatitis, pancreatic lipid deposition, pancreatic tumor, etc., as well as enlarged abdominal lymph nodes, peritoneal effusion, retroperitoneal space-occupying lesions, and certain gastric exophytic space-occupying lesions, etc., which can be detected by ultrasound of the liver, gallbladder, spleen and pancreas.6. It can be used in interventional therapy for certain diseases that are suitable for ultrasound-guided intervention therapy.