The detection rate of liver cancer is very small. Most of the liver nodules are mainly benign, and the probability of benign nodules is usually more than 90%. Hypoechoic nodules on the liver may be caused by hepatic hemangioma or cholangiocarcinoma, of course, it may also be caused by hepatocellular carcinoma. To judge the liver nodules, first of all, it is necessary to distinguish benign tumors and malignant, and it is better to go to the hospital to do an alpha-fetoprotein assay and enhancement of CT examination of the liver area. Usually, liver nodules are classified as hypoechoic, mesoechoic and hypoechoic nodules. Hypoechoic and mesoechoic nodules are often considered as intrahepatic bile duct stones, calcified foci, hemangiomas, and infectious foci on imaging, all of which are benign nodules.