Blood donation can detect anemia, erythrocytosis, leukocytosis or leukopenia, thrombocytosis or thrombocytopenia, viral hepatitis, syphilis, abnormal coagulation function and other diseases. Before donating blood, it is usually necessary to improve the immunity routine, coagulation function, blood routine and other related examinations, and only if the results of these examinations are normal will the conditions for blood donation be met. Immunization routine includes hepatitis B two-half pairs, hepatitis C virus antibody, syphilis antibody and HIV antibody, etc., which can clarify whether there are viral hepatitis, syphilis and HIV and other diseases. Coagulation function test can clarify whether the coagulation function of donated blood is normal or not. If there is any abnormality of coagulation function, it is necessary to go to the hematology department in time to further improve the relevant examination to clarify the specific cause of the disease, and then target the cause of the disease for treatment. Routine blood tests mainly include red blood cell, hemoglobin, white blood cell and platelet counts, through which it can be clarified whether there is anemia, erythrocytosis, leukocytosis or hypoplasia, thrombocytosis or hypoplasia, etc. In case of abnormalities, it is necessary to go to the Department of Hematology for further improvement of relevant examinations to clarify the specific causes of the disease, and then treat for the causes of the disease.