Liver injury is most common with drug-related liver injury, and its symptoms are related to the severity of the injury, as follows: a. Patients with mild liver injury can experience weakness, weakness, anorexia, abdominal pain in the right upper abdomen, yellow staining of the skin and mucous membranes, which can be accompanied by pruritus and rash of the skin, and more progressive weight loss. At this time, the patient’s serum total bilirubin level is mostly less than 2.5 times the high limit of normal value, and the international standardized ratio should be less than 1.5, and the glutathione transaminase or alkaline phosphatase is elevated, but it can be reversed. In moderate liver injury, the above symptoms can be significantly aggravated, the serum total bilirubin level is more than 2.5 times the high limit of the normal value, and the international normalized ratio is more than 1.5, and the serum transaminase level continues to rise. Third, in severe liver injury, patients may develop ascites, impaired consciousness, hepatic encephalopathy, liver failure, etc.