Biomedical research often involves studying patient data that contain personal information. Inappropriate use of these data might lead to leakage of sensitive information, which can put patient privacy at risk. The problem of preserving patient privacy has received increasing attentions in the era of big data. Therefore, for a biomedical research with this type of technology to be carried out correctly, it is essential to take care of the personal rights of the population and it is a necessary point that should not be overlooked.