Pre-operative tests done before surgery definitely include HIV tests. The hematology of the pre-surgical checkup program mainly includes blood tests, liver and kidney functions, electrolytes, blood sugar, coagulation tests, and immuno-decathlon. Immunization tests include Hepatitis B, Hepatitis C, Syphilis or AIDS. The significance of checking AIDS antibody is twofold: 1) to exclude whether the patient has the combination of the above infectious diseases, if there are infectious diseases, the surgical instruments must be strictly sterilized; 2) also to prevent cross-infection, so it is necessary to check the AIDS antibody before the surgical operation.