The six items of liver function examination include glutamic oxaloacetic transaminase, glutamic pyruvic transaminase, glutamic oxaloacetic transaminase ratio, total bilirubin, direct bilirubin and indirect bilirubin. When checking the test sheet of six liver function tests, first observe whether the values of glutamic oxaloacetic transaminase, glutamic pyruvic transaminase, total bilirubin, direct bilirubin and indirect bilirubin exceed the normal range. Only when the value of these examination items exceeds the normal value range can they have clinical significance, especially when the degree of increase is significant, which is twice the normal value. At this time, it indicates that there is hepatocyte damage, and there are problems in the uptake, transformation, and excretion of the liver. The ratio of glutamic oxaloacetate to glutamic pyruvate has clinical significance only when the values of glutamic oxaloacetate transaminase and glutamic pyruvate transaminase are abnormal. The decrease of the ratio of glutamic oxaloacetate to glutamic pyruvate transaminase indicates that the damage to liver cells is relatively mild, and the significant increase of the ratio of glutamic oxaloacetate to glutamic pyruvate transaminase indicates that the liver damage is serious, and even there may be. However, the results of liver function examination need to be combined with clinical symptoms and signs, and it may also need to further improve other relevant examinations before the final assessment can be made.