Self-assessment method of drug liver injury is unreliable, part of the drug liver injury have no typical clinical symptoms, it is difficult to carry out self-assessment, patients suspected of liver injury need to consult a doctor in time, improve the relevant examination, and make a clear diagnosis. Drug liver injury is through the drug itself or drug metabolites damage to liver cells. The liver is the main organ in the human body for the removal of drugs and their metabolites, and improper use of drugs may cause liver injury. People who drink alcohol for a long time have a higher sensitivity of the liver to drugs and are more prone to drug liver injury. For drugs with unknown side effects, consult your doctor to avoid liver damage. In daily life can not blindly take drugs or health care products, to avoid the occurrence of drug liver injury, physical discomfort need to consult a doctor in a timely manner, under the guidance of the doctor standardized treatment.