In the following article, the author tries to investigate why and how to supervise in Iran's legal system, focusing on the knowledge of professional ethics, and in the scope of the professions of parliament representatives and judges; Therefore, paying attention to the following questions: Does the mere existence of regulations, the scope of supervision seem sufficient? How is the role of ethics in supervision and based on what necessity? Is surveillance related to prevention and social control? Is there a connection between surveillance and social death? It is trying to achieve these results that in the direction of supervision, the mere existence of regulations does not seem to be enough; For supervision in Iran in the scope of the above-mentioned professions, no clear ethical standards have been defined for supervisors; Since supervision is voluntary and conscious decision-making and voluntary actions are subject to moral judgment, therefore it is subject to ethical requirements. Therefore, in terms of the concept of moral responsibility of individuals and supervisory institutions, an attempt is made to explain some of the most important ethical requirements of supervision in the scope of the professions considered in this research, in order to protect the supervisors from the harm of unethical supervision and one of the most important of them - death. The social of the supervised - warns. The tool we are considering is the regulation and approval of the comprehensive ethical document of supervision and emphasis on its ethical audit.