Liver disease refers to the lesions that occur in the liver. These include hepatitis B, hepatitis A, hepatitis C, cirrhosis, steatosis, liver cancer, alcoholic liver, and many other liver diseases. It is a common and extremely dangerous disease, which should be actively prevented. 1, the type of liver disease according to the pathogenesis can be divided into viral liver disease and non-viral liver disease: viral liver disease: is caused by a variety of different hepatitis virus caused by a group of liver damage mainly infectious diseases, according to the pathogenetic diagnosis, hepatitis virus at least five kinds, namely, hepatitis A, B, C, D, E hepatitis virus, respectively, causing A, B, C, D, E viral hepatitis. 2, non-viral liver disease includes the following: alcoholic liver disease: is due to long-term heavy drinking (alcoholism) caused by liver damage disease. Drug or toxic liver disease: Toxic hepatitis is a liver lesion caused by chemical toxins (such as phosphorus, arsenic, carbon tetrachloride, etc.), drugs or biotoxins caused by hepatitis or. Abnormal metabolic liver disease: liver disease caused by poor metabolism of a substance in the body. Fatty liver disease: a lesion caused by excessive accumulation of fat in the liver cells due to various causes. Possible causes of increased fat content in liver cells include alcoholism, diabetes, high blood fat, and excess weight.