Result: Research shows that the percentage of nurses who were aware of: Detection of blood type transfusion complications, the cause of blood transfusion complications both before and after training and the percentage of nurses who did not use abnormal blood units were very high (93.5%, 95%); The awareness of nurses about the most important blood type system in the practice of safe blood transfusion both before and after the training was not high (25.6%, 34.9%).