Abstract: ObjectiveTo understand the clinical use of blood, analyze the effect of the seasonal change, blood type deviation,velocity of increase and irrationality on blood collection and supply institutions for efficient and rational use of blood resources. Additionally, the tendency of clinical blood use in future was predicted. MethodsThe amount of blood for clinical use was analyzed according to the statistical data of medical institutions of Lianyungang city through retrospective study method from 2008 to 2013. ResultsBlood donation and clinical use had the seasonal fluctuation. There was a significant difference between the blood groups in in natural population of this region and the consumption of suspended red blood cells, The order from high to low of blood group is A>O>B>AB. The deviation of type A and type B may be related to the distribution difference of blood groups and the disease susceptibility of each group. The amount of whole blood use was yearly decreased and the use of suspended red blood cells and plasma kept in a constant level, whereas the use of platelets increased fast and the growth rate of cryoprecipitate was relatively stable. Using the regression analysis help accurately to predict the future value of the supply of different blood products. ConclusionsBlood donation and clinical blood use vary in seasons.In order to minimize the influence of blood type deviation, the minimum and maximum inventory warning lines of different blood types should be set specifically in the plan of blood inventory. The concept of blood transfusion has been changed (the whole blood transfusion has being replaced by component transfusion gradually), but the unreasonable transfusion in plasma is still common. It is feasible to apply the regression analysis to predict the clinical blood use, and scientific data base should be provided in an annual plan decision.