Liver damage can be divided into various types. In addition to disease-induced liver damage, drugs, alcohol and trauma can also cause liver damage. 1. Drug liver damage: drugs mainly need to be metabolized by the liver, causing long-term drug users, their liver burden is relatively heavy, may cause indirect or direct damage to the liver, thus causing drug liver damage. 2. Alcoholic liver injury: people who drink a lot of alcohol for a long time are likely to cause great liver damage, thus causing alcoholic liver damage. 3. Trauma: open liver injury caused by stabbing, firearm injury and closed liver injury caused by extrusion and collision can damage the liver. It can be seen that there are many causes of liver damage, and it is recommended to consult a doctor in time to find out the causes of liver damage and carry out targeted treatment to avoid delaying the condition.