Alanine aminotransferase actually refers to glutamic aminotransferase, with normal values ranging from 0-40 U/L. If it exceeds the normal range, it usually indicates inflammation, damage or necrosis of liver cells. If transaminases are found to be higher than normal, it is important to first identify the cause of the elevated transaminases and then determine the severity of the condition based on the different causes. For example, if the transaminases are recently elevated and the patient has no previous history of liver disease, consider that the transaminases are elevated due to recent use of cold medicine, anti-inflammatory drugs, or after drinking alcohol. If the degree of transaminase elevation is mild, patients do not need to worry excessively. After rest, liver protection, alcohol cessation and drug discontinuation, transaminase can be easily restored to normal in most cases. However, depending on the degree of aminotransferase elevation, the degree of clinical attention is also different. If the transaminases reach several hundred or even thousands, patients need to beware of the risk of liver failure, and need to be hospitalized and given adequate liver protection and hepatoprotection to make the transaminases fall or even return to normal as soon as possible in order to avoid the risk of liver failure.