In layman’s terms, liver fibrosis is a scar repair response to chronic liver injury caused by various etiologies, and is an early reversible stage of liver cirrhosis. In the past, the examination of liver fibrosis and cirrhosis was mainly clarified by serum testing machine liver puncture for pathological examination of liver tissue. The liver parenchymal stiffness is reflected by measuring the instantaneous elasticity profile of the liver. The testing process is completely non-invasive and painless, and takes only about 5-10 minutes, which is suitable for all kinds of people. This technique is the most accurate method for early diagnosis of liver fibrosis and cirrhosis, except for liver puncture biopsy, which allows patients to avoid liver puncture biopsy and reduces the risk of liver puncture biopsy. The non-invasive liver fibrosis diagnostic device is suitable for the examination of liver fibrosis and cirrhosis caused by various chronic liver diseases including viral hepatitis, alcoholic hepatitis, non-alcoholic steatohepatitis and autoimmune liver disease.