Blood biochemistry test is a method of checking the patient’s liver function, kidney function, blood lipid, blood sugar and various enzymes. Through blood biochemistry test, the following diseases can be detected: first, liver function damage disease, through blood biochemistry test, it can find out whether the patient’s aminotransferase is increased or not, whether the concentration of bilirubin is increased or not, so as to make a preliminary judgment on all kinds of viral hepatitis disease as well as medication hepatitis, fatty liver disease, etc. Second, it can determine whether the patient has diabetes or not. Secondly, it can determine whether the patient has diabetes or not. Through blood biochemistry examination, it can find out whether the patient’s fasting blood glucose concentration is high or not, so as to determine whether the patient has diabetes or not. Thirdly, it can make judgment on kidney disease, through blood biochemistry examination, it can find out whether the concentration of creatinine, urea nitrogen and uric acid of the patient is increased, so as to make judgment on kidney disease. Fourthly, it can make judgment on various diseases caused by myocardial infarction. When myocardial infarction occurs, myocardial enzymes will increase significantly, and through the examination of these enzymes, it can make judgment on myocardial infarction.