The ultimate goal of nursing, is providing these under health care with health and provision and due to nurses' direct contact with the patient, the profession is of particular importance. Having discussed the responsibilities of the nurses, this article studies a comparative study of civil liability of nurses in the Iranian and French law in the process of treatment. The issue of the owners of medical and dependent careers has been a common challenge and seems to be on the move to a reasonable and proportionate destination. In the Iranian and French law it seems that the nature of nurses' obligations is the obligation that does not lead to specific result. Although there are different words about the basics of responsibilities of nurses, ability of the common pertain able doctrine, is of more credibility and is apparently, according to the novel social life and its necessities, it gives strength to the laws and ethics.