Patients with anemia that progresses to a severe level are treated with blood transfusions, and depending on the severity of the anemia, blood products need to be transfused based on the clinical presentation. Blood transfusion is necessary, specific, and risky. After entering blood, the human body will experience adverse reactions to blood transfusion, and blood transfusion can lead to transmissible diseases, so anemia blood transfusion has certain risks. At present, medical methods and blood product management have reduced the risk to a very low medical level, and as long as the clinical treatment is timely, it will not have a great impact on the body. The risk is mainly imported infectious diseases, including AIDS, syphilis, hepatitis C, hepatitis B. However, at present, the blood products provided by blood centers under the management of blood products are very safe, and the pre-transfusion test and the health test of blood donors have been done in a very standardized way, so there is a risk of blood transfusion, but don’t be afraid of it, as the risk is very low, and there is no need to panic.