The purpose of this study is to compare the effect of two methods, multimedia and workshops, on knowledge, attitude and performance of nurses in the case of blood transfusion which is a randomized clinical trial with a control group.The members of this research are 111 people which are based on the determined sample size of nurses working in Rasoul Akram, Firoozgar and Firoozabadi teaching Hospitals. In case of lack of cooperation, the participant will be excluded from the study.To participate to the study 37 people will be selected from each hospital which two hospitals would be put in the intervention group and one hospital in the control group. At first the questionnaire of demographic, characteristics, knowledge, attitudes and performance will be completed as a self-report (pretest) then, it would be presented in the two hospitals which type of training is determined between the two types of training (workshops and multimedia).Two weeks after the intervention, in order to assess the primary outcome, self-reported questionnaires will be complete by nurses ,as the previous, in the condition of transfusion, then will Collect and evaluate.Also, the flash containing educational content and two educational posters would be offer to the control group as to comply with ethical issues then questionnaires would be analyzed by descriptive and interventional statistical tests.