Abstract: ObjectiveTo analyze the blood preparation and transfusion in 503 patients with cardiac surgery in 2014 and provide a reference for Blood Transfusion. MethodThe statistical data includes the amount of blood preparation and transfusion,the number of blood preparation and transfusion patients,the components of blood preparation and transfusion. ResultThe result showed that the proportion of red cell suspension and plasma transfusion was 60.64% and 59.05%. And the proportion of the amount of red cell suspension and plasma transfusion in blood preparation was 86.13% and 79.35%. More than 1/3 individuals received more red cell suspension （30.49%） and plasma transfusion（29.29%） during cardiac surgeries. The amount was 1~5 times higher than expected.ConclusionAccording to the correlation and difference between blood preparation and consumption,the blood storage and plan should be optimized to providesufficient blood for the operations in emergency and ensure blood resource to be safe and reasonable.

Key words: Blood, preparation, Blood, transfusion, Blood, safety, Reasonable, storage