Ultrasound can detect the liver parenchyma, hepatic artery, hepatic vein, portal vein, spleen and other organs in multiple directions and angles, and has high diagnostic value for hepatic sclerosis and portal hypertension. The abnormal changes of ultrasound examination in cirrhosis are mainly as follows: a. Liver size and morphology and echogenic changes: In early cirrhosis, the liver is seen to be enlarged, with dense, enhanced or thickened parenchymal echogenicity; in late cirrhosis, the liver shows unevenness, nodular, serrated, step-like changes, irregular atrophy and deformation, and diffuse echogenic enhancement with uneven distribution. The specific manifestations are smaller upper and lower diameters of the left and right lobes of the liver, thinning of the liver, the left lobe of the liver is often shrinking more significantly, but there are a few patients with compensatory enlargement of the left lobe of the liver; thickening of the liver envelope, loss of smooth fibrous bright lines, echogenic enhancement, uneven thickness, uneven liver surface, especially the dirty surface of the unevenness, may be serrated, more clear when ascites appears, the liver edge angle blunt or irregular; liver parenchyma echogenic diffuse enhancement, dense medium and small The echogenicity of the liver parenchyma is diffusely enhanced, showing dense medium and small dots or coarse dots with uneven echogenicity, irregular strong echogenic cords and patchy echogenicity, and small hypoechoic areas in the hyperechoic region. Intrahepatic vascular manifestations: uneven thickness, distorted and occluded vessels are not visible, especially the hepatic vein is obvious, its trunk is thin and branches are narrow. The main trunk, right branch and left branch of portal vein are thickened due to obstruction of blood flow. The inner diameter of main trunk of portal vein > 13mm, right branch of portal vein > 10mm, left branch > llmm, and inner diameter of splenic vein > 8mm suggest portal hypertension. Most of them are accompanied by splenomegaly and ascites, and the thickness of splenomegaly is more than 4cm and the length is more than 120cm. The gallbladder may shrink and shift upward with the liver: the most common is thickening of the gallbladder wall or double-wall signs, with hypoechogenicity between the two hyperechoic bands.