Recovery time for transaminases 300 u/L is related to the cause of the disease. Acute liver injury can be recovered in about a week, while chronic liver injury has a longer recovery time of 2~4 weeks or longer. 1. Acute liver injury: such as statin drugs, chemical substances and single large amount of alcohol consumption can cause acute injury to liver cells, resulting in transaminase elevation to 300u/L. Generally, after removing the cause of the disease and carrying out liver protection treatment, the transaminase index can be recovered in about one week. 2. Chronic liver injury: generally due to chronic hepatitis, cirrhosis, etc. can lead to persistent damage to liver cells, need to actively control the primary disease condition at the same time for liver protection treatment, generally aminotransferase recovery time can be in 2~4 weeks, but the primary disease control is not ideal, then the aminotransferase recovery time needs a relatively longer period of time. It is recommended that people with elevated aminotransferases should consult a doctor in a timely manner to clarify the cause of the disease, and then seek treatment as soon as possible under the guidance of a physician.