The study found that although nature of obligation of the owners of medical and dependent careers to the jurists did not mansion explicitly, this issue is clear. The majority Emamyeh jurisprudence is that the obligations of allowed treating skilful medicine can be accomplished only if he has received his acquittal. But unlike the majority of jurists in the Sunni jurisprudence that believe the obligation of medicine is obligation that not leads to specific result. In Islamic countries law, France, and the legal system's Common law, the obligation of medicine is the obligation that does not lead to specific result. In the Iranian law it seems that the owners of medical and dependent careers, who have the permission as well as the skill, have usually obligation that does not lead to specific result.