The three checks and eight pairs of blood transfusion is a kind of clinical core system, that is, in the transfusion of blood products, it is necessary to carry out a comprehensive verification system of all kinds of information about the patient, so as to avoid the transfusion of the wrong kind of blood to cause major medical errors. The three checks refer to: I. Check whether the blood products are of qualified quality, mainly to see whether there are any abnormalities in the appearance. Second, observe whether the blood bag has leakage, if the blood bag has leakage, it can not be applied to the patient. Third, observe whether the blood products are within the shelf life, only within the shelf life of the blood products, can be applied to the patient. Eight pairs is to check the patient’s name, gender, age, hospitalization, bed number, but also to check the patient’s cross-matching results, the type of blood products applied for and the dose of blood products, eight pairs of requirements of more than two health care personnel at the same time check. Only after the three checks and eight pairs have been determined to be correct, can the blood products be applied to the patient.