It is difficult to conclude whether the high 71 u/l of alanine aminotransferase is serious or not, the index of alanine aminotransferase can not be used as the only criterion. It is necessary to further check the liver and gallbladder ultrasound examination, blood routine and so on. The normal reference value of alanine aminotransferase is 0~40u/l, so this test result is a mild elevation, whether it is serious or not, can not be taken as the only criterion, and it is necessary to take into account other comprehensive conditions. Elevated aminotransferases are usually caused by acute and chronic hepatitis, cirrhosis, hepatocellular damage, alcoholic liver, fatty liver or drug hepatitis. In addition, alcohol consumption, fatigue, cold and flu can also lead to a temporary increase in aminotransferases. In order to understand the condition of patients with high aminotransferase, they need to do further examination, including liver and gallbladder ultrasound examination, blood routine and other related examinations, usually to protect the liver, do not drink alcohol, do not strain, prevent colds and flu, and do not blindly take medication, which can easily damage the liver. Patients with high aminotransferase need to do further examination in time, to fully understand the condition, the index of alanine aminotransferase can not be used as the only standard.