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Objective To investigate the incidence and composition of adverse reactions to blood transfusion(ARBT) in Qingdao hospitals in recent years. Methods The "Statistical Table of Adverse Reactions to Blood Transfusion in Medical Institutions" issued by Qingdao Quality Control Center of Blood Transfusion throughout 2020 to 2021, involving 96 hospitals in the region, were collected and analyzed, including the number, proportion and types of ARBT, as well as the types of blood components transfused. Results From 2020 to 2021, 296 676 cases of blood transfusion in 96 hospitals occurred, and the incidence of ARBT was 0.27% (814/296 676), of which the incidence of ARBT involving plasma transfusion was 0.17% [accounting for 39.07% (318/814) of all transfusion reactions], involving platelet transfusion was 0.68% [31.08% (259/814)], involving erythrocyte transfusion was 0.11% [27.64% (225/814)] and cryoprecipitation transfusion 0.03% [1.47% (12/814)]. The types of ARBT were anaphylaxis 77.64% (632/814), fever 19.78% (161/814), transfusion-related dyspnea 1.47% (12/814), transfusion-related circulatory overload 0.37% (3/814), purpura 0.25% (2/814) and transfusion-related hypotension 0.25% (2/814), delayed hemolysis 0.12%(1/814) and acute hemolysis 0.12%(1/814), respectively. Conclusion In recent years, the incidence of ARBT in local medical institutions is lower than that of domestic general level, and the main reactions are anaphylaxis and fever following the transfusion of plasma or (and) platelets.The monitoring and control of ARBT should be strengthened in each hospital with accurate and timely report, and active preventive measures should be taken to control or reduce the incidence of ARBT effectively.