Surgical stitches are required to use the preoperative quad. Regardless of the size of the surgery, no matter what kind of surgery it is, in order to ensure the safety of the surgery, it is necessary to do the preoperative quadruple test to understand the general condition of the patient. The preoperative quadruple test includes Hepatitis B surface antigen, Hepatitis C antibody, HIV antibody, and syphilis antibody, which mainly determines whether the patient has these infectious diseases, and needs to be guided by the results of the test to guide the surgery. If the patient has these infectious diseases, there should be special requirements for infected surgical rooms, sterilization of instruments and so on, and of course the same applies to surgical stitches. For emergency life-saving surgery, blood can be drawn before surgery, do not have to wait for the results of the examination, the first surgery to save lives, the operation carefully operated.