The damage caused by the crime is also the damage caused by the criminal action to another person (the victim, his heirs or his successors). The Kurd plan has the right to request compensation from the judicial authority for the damages and injuries that have been caused to him directly by the commission of the crime. In the judicial systems where the legal and criminal courts act in a specialized manner in dealing with claims within their jurisdiction, the principle is that the legal reference deals with civil claims and the criminal reference deals with criminal claims. But sometimes the criminal reference finds the possibility of dealing with the legal claim as an exception. In Iranian law, due to the fact that legal courts deal only with legal matters and criminal courts deal only with criminal matters, the principle of specialization in dealing with claims has been followed on this basis in dealing with claims related to damages. of the crime while dealing with criminal matters due to the ambiguity and summary and the amended articles of the criminal procedure law in this research, which is done with a descriptive-analytical method, an attempt is made to investigate and explain the concept and nature of the harm and loss caused by the crime, Investigate the progress of the legal development of claims for damages in criminal courts and judicial procedures.