The referral of individuals to the courts is often the main right to bring proceedings in the nature and claim of the original right, but sometimes there are cases where the purpose of the reference is not to obtain a ruling, but to refer to the right to secure the right to secure, a right which, prior to the issuance and Or the execution of a vote is at risk of destruction. Sometimes, the goal is to put the security reason behind the difficulty of using it in the future. On this basis, in the Iranian legal system, there are three legal entities that are in line with these goals Legislators have been recognized: interim orders, supply requests, reason supply. Interim orders and requests for custody are among the precautionary measures in the Civil Procedure Code, which usually will not be a problem if they are issued and enforced in the future. An application for interim and interim orders can be filed before the lawsuit is filed, filed a lawsuit or filed. There are similarities between these two entities, the existence of these similarities should not create the impression that the role of these two entities is the same because, despite the existing similarities, there are some important differences between the two entities which makes them distinct. In this research, in the form of three chapters and conclusions, the first chapter of supply is requested and in the second chapter, the interim order will be explained, and in the third chapter, we will discuss the means of differentiating these two and finally concluding.