Generally, you can check whether the liver function is healthy by going to the hospital for liver function tests and hepatitis virus tests, imaging tests, and observing your own physical condition. 1. Liver function test and hepatitis virus: you can check the level of cholinesterase, albumin and globulin, total bilirubin, aminotransferase and alkaline phosphatase, etc. to see whether the liver is healthy or not, and if the values are within the normal range, the liver is healthy. If the values are within the normal range, the liver is healthy. If the values are off by a large margin, the liver may be diseased. Hepatitis B and C virus tests can be performed to check for hepatitis virus infection. 2. Imaging examination: Generally, color ultrasound examination is enough, and CT or nuclear magnetic examination should be carried out from time to time. Observe whether there is fatty liver and benign liver tumor. 3. Observation of one’s own physical condition: if there is yellow staining of the skin, sclera, urine and other tissues, long-term itching of the skin, raised or downward depression on the surface of the fingernails, this situation may also indicate that there is an abnormality of liver function, and it is recommended to consult a doctor in time. In addition, more attention should be paid to rest, regular and healthy diet, moderate exercise and regular medical checkups during weekdays.