Hepatic elastography, also known as liver transient elastography, is a non-invasive test that is also simple, quick, easy to perform, reproducible, safe and well tolerated. The wave velocity correlates with the elasticity of the liver, and the higher the measured liver stiffness, the faster the wave velocity, which can be converted to the elasticity of the liver to reflect the degree of liver fibrosis. indicator for long-term outpatient follow-up. However, the liver transient elastography system also has certain disadvantages, which are affected by various factors, such as hepatitis activity, extrahepatic cholestasis, hepatic vein stasis and obesity, etc. It also needs to be combined with liver function, ultrasound and other related indicators to further determine, and if necessary, liver aspiration biopsy.