Results and conclusions: Autoantibodies in AIHA patients were mainly warm antibodies (wAIHA) (78%), cold antibodies (cAIHA) and the mix antibodies (mAIHA) were less frequently with a ratio of 8, 7% and 13, 3% respectively; The proportion of wAIHA patients who requiring the red blood cells transfusion was 48, 7% and lower than the ratio of cAIHA and mAIHA patients; There were 279 units of red blood cells transfused to 87 patients, an average of 3, 2 units per patient, the amount of blood transfused for wAIHA-patients was less than cAIHA and mAIHA-patients; The rate of positive cross-reactive blood transfusion in cAIHA-patients was 36, 7%, lower than wAIHApatients (71, 8%) and mAIHA-patients (69, 3%); The increase of hemoglobin after 24 hours of red blood cells transfusion was 3, 6g / dl on average, the rate of patients receiving the effective red blood cells transfusion reached 71%.