The patient’s ADA is also known clinically as adenosine deaminase, and its normal value is usually 0-25 U/L. If it is within this range, the patient’s adenosine deaminase is considered normal. For adenosine deaminase is generally low and has little clinical significance. If the patient’s adenosine deaminase is elevated, it is more likely that the patient has liver disease, especially for patients with viral hepatitis and fatty liver, which can result in elevated adenosine deaminase. In this case, the patient needs to further draw blood to check the hepatitis B system and hepatitis C antibody to see if the patient has chronic viral hepatitis B or chronic viral hepatitis C. If there is any of the above, we should actively consider giving liver preservation treatment, and if the virus has replication combined with liver function damage, we should also actively give antiviral treatment. For patients with fatty liver, if the fatty liver is moderate or above, patients should actively consider taking some lipid-lowering drugs for treatment, in addition to changing their daily life.